Drag tab to tab page should not create new window

Instead it should move the tab into that tab page like it used to

Drag controller must know about valid drop targets in app store now.

Fix #8498

Auditors: @luixxiul

app/renderer/components/tabs/tabPage.js

@@ -17,6 +17,7 @@ const dragTypes = require('../../../../js/constants/dragTypes')
 // Utils
 const cx = require('../../../../js/lib/classSet')
 const {onTabPageContextMenu} = require('../../../../js/contextMenus')
+const {getCurrentWindowId} = require('../../currentWindow')
 const dndData = require('../../../../js/dndData')
 
 class TabPage extends ImmutableComponent {
@@ -46,6 +47,9 @@ class TabPage extends ImmutableComponent {
     if (this.props.tabPageFrames.size === 0) {
       return
     }
+
+    appActions.dataDropped(getCurrentWindowId())
+
     const moveToFrame = this.props.tabPageFrames.get(0)
     const sourceDragData = dndData.getDragData(e.dataTransfer, dragTypes.TAB)
     const sourceDragFromPageIndex = this.props.sourceDragFromPageIndex