diff --git a/core/flyout_base.js b/core/flyout_base.js
index c37d2a1efec..011149a9749 100644
--- a/core/flyout_base.js
+++ b/core/flyout_base.js
@@ -37,6 +37,7 @@ const WorkspaceSvg = goog.require('Blockly.WorkspaceSvg');
 const Xml = goog.require('Blockly.Xml');
 const browserEvents = goog.require('Blockly.browserEvents');
 const dom = goog.require('Blockly.utils.dom');
+const object = goog.require('Blockly.utils.object');
 const toolbox = goog.require('Blockly.utils.toolbox');
 const utils = goog.require('Blockly.utils');
 const utilsXml = goog.require('Blockly.utils.xml');
@@ -155,7 +156,7 @@ const Flyout = function(workspaceOptions) {
    */
   this.targetWorkspace = null;
 };
-utils.object.inherits(Flyout, DeleteArea);
+object.inherits(Flyout, DeleteArea);
 
 /**
  * Does the flyout automatically close when a block is created?
diff --git a/core/renderers/common/constants.js b/core/renderers/common/constants.js
index 5e5ecb74716..08c0d61ca15 100644
--- a/core/renderers/common/constants.js
+++ b/core/renderers/common/constants.js
@@ -21,6 +21,7 @@ const Theme = goog.requireType('Blockly.Theme');
 const colour = goog.require('Blockly.utils.colour');
 const connectionTypes = goog.require('Blockly.connectionTypes');
 const dom = goog.require('Blockly.utils.dom');
+const object = goog.require('Blockly.utils.object');
 const svgPaths = goog.require('Blockly.utils.svgPaths');
 const userAgent = goog.require('Blockly.utils.userAgent');
 const utils = goog.require('Blockly.utils');
@@ -715,7 +716,7 @@ ConstantProvider.prototype.validatedBlockStyle_ = function(blockStyle) {
   // Make a new object with all of the same properties.
   const valid = /** @type {!Theme.BlockStyle} */ ({});
   if (blockStyle) {
-    utils.object.mixin(valid, blockStyle);
+    object.mixin(valid, blockStyle);
   }
   // Validate required properties.
   const parsedColour = utils.parseBlockColour(valid['colourPrimary'] || '#000');
diff --git a/core/toolbox/toolbox.js b/core/toolbox/toolbox.js
index 37808a80de6..1bff6d844e0 100644
--- a/core/toolbox/toolbox.js
+++ b/core/toolbox/toolbox.js
@@ -50,6 +50,7 @@ const WorkspaceSvg = goog.requireType('Blockly.WorkspaceSvg');
 const aria = goog.require('Blockly.utils.aria');
 const browserEvents = goog.require('Blockly.browserEvents');
 const dom = goog.require('Blockly.utils.dom');
+const object = goog.require('Blockly.utils.object');
 const registry = goog.require('Blockly.registry');
 const utils = goog.require('Blockly.utils');
 const toolbox = goog.require('Blockly.utils.toolbox');
@@ -189,7 +190,7 @@ const Toolbox = function(workspace) {
    */
   this.boundEvents_ = [];
 };
-utils.object.inherits(Toolbox, DeleteArea);
+object.inherits(Toolbox, DeleteArea);
 
 /**
  * Handles the given keyboard shortcut.
diff --git a/core/trashcan.js b/core/trashcan.js
index 49596ae8383..b3a459f0182 100644
--- a/core/trashcan.js
+++ b/core/trashcan.js
@@ -32,6 +32,7 @@ const IPositionable = goog.requireType('Blockly.IPositionable');
 const MetricsManager = goog.requireType('Blockly.MetricsManager');
 const Options = goog.require('Blockly.Options');
 const Rect = goog.require('Blockly.utils.Rect');
+const Size = goog.require('Blockly.utils.Size');
 const Svg = goog.require('Blockly.utils.Svg');
 /* eslint-disable-next-line no-unused-vars */
 const WorkspaceSvg = goog.requireType('Blockly.WorkspaceSvg');
@@ -39,10 +40,10 @@ const Xml = goog.require('Blockly.Xml');
 const browserEvents = goog.require('Blockly.browserEvents');
 const dom = goog.require('Blockly.utils.dom');
 const internalConstants = goog.require('Blockly.internalConstants');
+const object = goog.require('Blockly.utils.object');
 const registry = goog.require('Blockly.registry');
 const toolbox = goog.require('Blockly.utils.toolbox');
 const uiPosition = goog.require('Blockly.uiPosition');
-const utils = goog.require('Blockly.utils');
 /** @suppress {extraRequire} */
 goog.require('Blockly.Events.TrashcanOpen');
 
@@ -123,7 +124,7 @@ const Trashcan = function(workspace) {
   }
   this.workspace_.addChangeListener(this.onDelete_.bind(this));
 };
-utils.object.inherits(Trashcan, DeleteArea);
+object.inherits(Trashcan, DeleteArea);
 
 /**
  * Width of both the trash can and lid images.
@@ -453,7 +454,7 @@ Trashcan.prototype.position = function(metrics, savedPositions) {
 
   const height = BODY_HEIGHT + LID_HEIGHT;
   const startRect = uiPosition.getStartPositionRect(
-      cornerPosition, new utils.Size(WIDTH, height), MARGIN_HORIZONTAL,
+      cornerPosition, new Size(WIDTH, height), MARGIN_HORIZONTAL,
       MARGIN_VERTICAL, metrics, this.workspace_);
 
   const verticalPosition = cornerPosition.vertical;
diff --git a/core/zoom_controls.js b/core/zoom_controls.js
index eb27b17e311..0348a202fbe 100644
--- a/core/zoom_controls.js
+++ b/core/zoom_controls.js
@@ -19,6 +19,7 @@ const Events = goog.require('Blockly.Events');
 /* eslint-disable-next-line no-unused-vars */
 const IPositionable = goog.requireType('Blockly.IPositionable');
 const Rect = goog.require('Blockly.utils.Rect');
+const Size = goog.require('Blockly.utils.Size');
 const Svg = goog.require('Blockly.utils.Svg');
 const Touch = goog.require('Blockly.Touch');
 /* eslint-disable-next-line no-unused-vars */
@@ -27,7 +28,6 @@ const browserEvents = goog.require('Blockly.browserEvents');
 const dom = goog.require('Blockly.utils.dom');
 const internalConstants = goog.require('Blockly.internalConstants');
 const uiPosition = goog.require('Blockly.uiPosition');
-const utils = goog.require('Blockly.utils');
 /** @suppress {extraRequire} */
 goog.require('Blockly.Events.Click');
 
@@ -264,7 +264,7 @@ ZoomControls.prototype.position = function(metrics, savedPositions) {
     height += this.LARGE_SPACING_ + this.HEIGHT_;
   }
   const startRect = uiPosition.getStartPositionRect(
-      cornerPosition, new utils.Size(this.WIDTH_, height),
+      cornerPosition, new Size(this.WIDTH_, height),
       this.MARGIN_HORIZONTAL_, this.MARGIN_VERTICAL_, metrics, this.workspace_);
 
   const verticalPosition = cornerPosition.vertical;
diff --git a/tests/deps.js b/tests/deps.js
index 41eb31f3de2..0914683b260 100644
--- a/tests/deps.js
+++ b/tests/deps.js
@@ -76,7 +76,7 @@ goog.addDependency('../../core/field_number.js', ['Blockly.FieldNumber'], ['Bloc
 goog.addDependency('../../core/field_registry.js', ['Blockly.fieldRegistry'], ['Blockly.registry'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/field_textinput.js', ['Blockly.FieldTextInput'], ['Blockly', 'Blockly.DropDownDiv', 'Blockly.Events', 'Blockly.Events.BlockChange', 'Blockly.Field', 'Blockly.Msg', 'Blockly.WidgetDiv', 'Blockly.browserEvents', 'Blockly.fieldRegistry', 'Blockly.utils', 'Blockly.utils.Coordinate', 'Blockly.utils.KeyCodes', 'Blockly.utils.aria', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.userAgent'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/field_variable.js', ['Blockly.FieldVariable'], ['Blockly.Events.BlockChange', 'Blockly.FieldDropdown', 'Blockly.Msg', 'Blockly.VariableModel', 'Blockly.Variables', 'Blockly.Xml', 'Blockly.fieldRegistry', 'Blockly.internalConstants', 'Blockly.utils', 'Blockly.utils.Size', 'Blockly.utils.object'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../core/flyout_base.js', ['Blockly.Flyout'], ['Blockly', 'Blockly.ComponentManager', 'Blockly.DeleteArea', 'Blockly.Events', 'Blockly.Events.BlockCreate', 'Blockly.Events.VarCreate', 'Blockly.FlyoutMetricsManager', 'Blockly.Gesture', 'Blockly.ScrollbarPair', 'Blockly.Tooltip', 'Blockly.Touch', 'Blockly.Variables', 'Blockly.WorkspaceSvg', 'Blockly.Xml', 'Blockly.blockRendering', 'Blockly.browserEvents', 'Blockly.utils', 'Blockly.utils.Coordinate', 'Blockly.utils.Svg', 'Blockly.utils.dom', 'Blockly.utils.toolbox', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../core/flyout_base.js', ['Blockly.Flyout'], ['Blockly', 'Blockly.ComponentManager', 'Blockly.DeleteArea', 'Blockly.Events', 'Blockly.Events.BlockCreate', 'Blockly.Events.VarCreate', 'Blockly.FlyoutMetricsManager', 'Blockly.Gesture', 'Blockly.ScrollbarPair', 'Blockly.Tooltip', 'Blockly.Touch', 'Blockly.Variables', 'Blockly.WorkspaceSvg', 'Blockly.Xml', 'Blockly.blockRendering', 'Blockly.browserEvents', 'Blockly.utils', 'Blockly.utils.Coordinate', 'Blockly.utils.Svg', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.toolbox', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/flyout_button.js', ['Blockly.FlyoutButton'], ['Blockly.Css', 'Blockly.browserEvents', 'Blockly.utils', 'Blockly.utils.Coordinate', 'Blockly.utils.Svg', 'Blockly.utils.dom', 'Blockly.utils.style'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/flyout_horizontal.js', ['Blockly.HorizontalFlyout'], ['Blockly.DropDownDiv', 'Blockly.Flyout', 'Blockly.Scrollbar', 'Blockly.WidgetDiv', 'Blockly.registry', 'Blockly.utils', 'Blockly.utils.Rect', 'Blockly.utils.object', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/flyout_metrics_manager.js', ['Blockly.FlyoutMetricsManager'], ['Blockly.MetricsManager', 'Blockly.utils.object'], {'lang': 'es6', 'module': 'goog'});
@@ -136,7 +136,7 @@ goog.addDependency('../../core/procedures.js', ['Blockly.Procedures'], ['Blockly
 goog.addDependency('../../core/registry.js', ['Blockly.registry'], [], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/rendered_connection.js', ['Blockly.RenderedConnection'], ['Blockly.Connection', 'Blockly.Events', 'Blockly.connectionTypes', 'Blockly.internalConstants', 'Blockly.utils', 'Blockly.utils.Coordinate', 'Blockly.utils.Svg', 'Blockly.utils.deprecation', 'Blockly.utils.dom', 'Blockly.utils.object'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/renderers/common/block_rendering.js', ['Blockly.blockRendering'], ['Blockly.registry'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../core/renderers/common/constants.js', ['Blockly.blockRendering.ConstantProvider'], ['Blockly.connectionTypes', 'Blockly.utils', 'Blockly.utils.Svg', 'Blockly.utils.colour', 'Blockly.utils.dom', 'Blockly.utils.svgPaths', 'Blockly.utils.userAgent'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../core/renderers/common/constants.js', ['Blockly.blockRendering.ConstantProvider'], ['Blockly.connectionTypes', 'Blockly.utils', 'Blockly.utils.Svg', 'Blockly.utils.colour', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.svgPaths', 'Blockly.utils.userAgent'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/renderers/common/debugger.js', ['Blockly.blockRendering.Debug'], ['Blockly.FieldLabel', 'Blockly.blockRendering.Types', 'Blockly.connectionTypes', 'Blockly.utils.Svg', 'Blockly.utils.dom'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/renderers/common/drawer.js', ['Blockly.blockRendering.Drawer'], ['Blockly.blockRendering.Types', 'Blockly.utils.svgPaths'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/renderers/common/i_path_object.js', ['Blockly.blockRendering.IPathObject'], [], {'lang': 'es6', 'module': 'goog'});
@@ -203,12 +203,12 @@ goog.addDependency('../../core/theme_manager.js', ['Blockly.ThemeManager'], ['Bl
 goog.addDependency('../../core/toolbox/category.js', ['Blockly.ToolboxCategory'], ['Blockly', 'Blockly.Css', 'Blockly.ToolboxItem', 'Blockly.registry', 'Blockly.utils', 'Blockly.utils.aria', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/toolbox/collapsible_category.js', ['Blockly.CollapsibleToolboxCategory'], ['Blockly.ToolboxCategory', 'Blockly.ToolboxSeparator', 'Blockly.registry', 'Blockly.utils.aria', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/toolbox/separator.js', ['Blockly.ToolboxSeparator'], ['Blockly.Css', 'Blockly.ToolboxItem', 'Blockly.registry', 'Blockly.utils.dom', 'Blockly.utils.object'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../core/toolbox/toolbox.js', ['Blockly.Toolbox'], ['Blockly', 'Blockly.BlockSvg', 'Blockly.CollapsibleToolboxCategory', 'Blockly.ComponentManager', 'Blockly.Css', 'Blockly.DeleteArea', 'Blockly.Events', 'Blockly.Events.ToolboxItemSelect', 'Blockly.Options', 'Blockly.Touch', 'Blockly.browserEvents', 'Blockly.registry', 'Blockly.utils', 'Blockly.utils.Rect', 'Blockly.utils.aria', 'Blockly.utils.dom', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../core/toolbox/toolbox.js', ['Blockly.Toolbox'], ['Blockly', 'Blockly.BlockSvg', 'Blockly.CollapsibleToolboxCategory', 'Blockly.ComponentManager', 'Blockly.Css', 'Blockly.DeleteArea', 'Blockly.Events', 'Blockly.Events.ToolboxItemSelect', 'Blockly.Options', 'Blockly.Touch', 'Blockly.browserEvents', 'Blockly.registry', 'Blockly.utils', 'Blockly.utils.Rect', 'Blockly.utils.aria', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/toolbox/toolbox_item.js', ['Blockly.ToolboxItem'], ['Blockly.utils.IdGenerator'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/tooltip.js', ['Blockly.Tooltip'], ['Blockly.browserEvents', 'Blockly.common', 'Blockly.utils.string']);
 goog.addDependency('../../core/touch.js', ['Blockly.Touch'], ['Blockly.internalConstants', 'Blockly.utils.global', 'Blockly.utils.string'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/touch_gesture.js', ['Blockly.TouchGesture'], ['Blockly.Gesture', 'Blockly.Touch', 'Blockly.browserEvents', 'Blockly.utils', 'Blockly.utils.Coordinate', 'Blockly.utils.object']);
-goog.addDependency('../../core/trashcan.js', ['Blockly.Trashcan'], ['Blockly.ComponentManager', 'Blockly.DeleteArea', 'Blockly.Events', 'Blockly.Events.TrashcanOpen', 'Blockly.Options', 'Blockly.Xml', 'Blockly.browserEvents', 'Blockly.internalConstants', 'Blockly.registry', 'Blockly.uiPosition', 'Blockly.utils', 'Blockly.utils.Rect', 'Blockly.utils.Svg', 'Blockly.utils.dom', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../core/trashcan.js', ['Blockly.Trashcan'], ['Blockly.ComponentManager', 'Blockly.DeleteArea', 'Blockly.Events', 'Blockly.Events.TrashcanOpen', 'Blockly.Options', 'Blockly.Xml', 'Blockly.browserEvents', 'Blockly.internalConstants', 'Blockly.registry', 'Blockly.uiPosition', 'Blockly.utils.Rect', 'Blockly.utils.Size', 'Blockly.utils.Svg', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/utils.js', ['Blockly.utils'], ['Blockly.Msg', 'Blockly.internalConstants', 'Blockly.utils.Coordinate', 'Blockly.utils.Rect', 'Blockly.utils.colour', 'Blockly.utils.global', 'Blockly.utils.string', 'Blockly.utils.style', 'Blockly.utils.userAgent']);
 goog.addDependency('../../core/utils/aria.js', ['Blockly.utils.aria'], [], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/utils/colour.js', ['Blockly.utils.colour'], [], {'lang': 'es6', 'module': 'goog'});
@@ -244,6 +244,6 @@ goog.addDependency('../../core/workspace_drag_surface_svg.js', ['Blockly.Workspa
 goog.addDependency('../../core/workspace_dragger.js', ['Blockly.WorkspaceDragger'], ['Blockly.utils.Coordinate'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/workspace_svg.js', ['Blockly.WorkspaceSvg'], ['Blockly.BlockSvg', 'Blockly.ComponentManager', 'Blockly.ConnectionDB', 'Blockly.ContextMenu', 'Blockly.ContextMenuRegistry', 'Blockly.Events', 'Blockly.Events.BlockCreate', 'Blockly.Events.ThemeChange', 'Blockly.Events.ViewportChange', 'Blockly.Gesture', 'Blockly.Grid', 'Blockly.MarkerManager', 'Blockly.MetricsManager', 'Blockly.Msg', 'Blockly.Options', 'Blockly.ThemeManager', 'Blockly.Themes.Classic', 'Blockly.TouchGesture', 'Blockly.Workspace', 'Blockly.WorkspaceAudio', 'Blockly.Xml', 'Blockly.blockRendering', 'Blockly.browserEvents', 'Blockly.common', 'Blockly.internalConstants', 'Blockly.registry', 'Blockly.utils', 'Blockly.utils.Coordinate', 'Blockly.utils.Rect', 'Blockly.utils.Size', 'Blockly.utils.Svg', 'Blockly.utils.dom', 'Blockly.utils.object', 'Blockly.utils.toolbox'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/xml.js', ['Blockly.Xml'], ['Blockly.Events', 'Blockly.inputTypes', 'Blockly.utils.Size', 'Blockly.utils.dom', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../core/zoom_controls.js', ['Blockly.ZoomControls'], ['Blockly.ComponentManager', 'Blockly.Css', 'Blockly.Events', 'Blockly.Events.Click', 'Blockly.Touch', 'Blockly.browserEvents', 'Blockly.internalConstants', 'Blockly.uiPosition', 'Blockly.utils', 'Blockly.utils.Rect', 'Blockly.utils.Svg', 'Blockly.utils.dom'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../core/zoom_controls.js', ['Blockly.ZoomControls'], ['Blockly.ComponentManager', 'Blockly.Css', 'Blockly.Events', 'Blockly.Events.Click', 'Blockly.Touch', 'Blockly.browserEvents', 'Blockly.internalConstants', 'Blockly.uiPosition', 'Blockly.utils.Rect', 'Blockly.utils.Size', 'Blockly.utils.Svg', 'Blockly.utils.dom'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('base.js', [], []);