Merge "ui: Don't add ftrace tab by default" into main

test/data/ui-screenshots/ui-android_trace_30s_expand_camera.png.sha256

@@ -1 +1 @@
-71f0799ce780f36dbdeb601ba535ee012b7323afc57254a5b383704ec384da62
+d12dc4f32f544a32bca4302314d7eb4984a3e6473d78298435396c7f81522564

test/data/ui-screenshots/ui-android_trace_30s_load.png.sha256

@@ -1 +1 @@
-725ff7289949bda82fc4c2d454e1ee0b4218b3d56f20c1098d6fa7914ef19bfc
+2273d163c13ea0e296492ba30a2669c70d0e5ab050317c17f108a1836052c908

test/data/ui-screenshots/ui-routing_open_invalid_trace_from_blank_page.png.sha256

@@ -1 +1 @@
-bd495271f97ffe17851f6605acaf24463c2363cb6a4bcf8e1b3fd78b9e18353f
+d9539daa1cf9a5b621377ed5e4be164adfee64f9f320caa7b0d1abc584276427

ui/src/tracks/ftrace/index.ts

@@ -165,10 +165,6 @@ class FtraceRawPlugin implements Plugin {
       },
     });
 
-    if (await this.hasFtrace(ctx.engine)) {
-      ctx.addDefaultTab(ftraceTabUri);
-    }
-
     ctx.registerCommand({
       id: 'perfetto.FtraceRaw#ShowFtraceTab',
       name: 'Show Ftrace Tab',
@@ -178,18 +174,6 @@ class FtraceRawPlugin implements Plugin {
     });
   }
 
-  private async hasFtrace(engine: EngineProxy): Promise<boolean> {
-    // Check if we have any ftrace events at all
-    const query = `
-      select
-        *
-      from ftrace_event
-      limit 1`;
-
-    const res = await engine.query(query);
-    return res.numRows() > 0;
-  }
-
   private async lookupCpuCores(engine: EngineProxy): Promise<number[]> {
     const query = 'select distinct cpu from ftrace_event';