arc: enable Android tracing in verified-boot mode

components/arc/common/arc_bridge.mojom

Index: components/arc/common/arc_bridge.mojom
diff --git a/components/arc/common/arc_bridge.mojom b/components/arc/common/arc_bridge.mojom
index 94b0aa8767cd83b378a10b7a94cdc1e654f399ca..de21009d967411223f188f862857ecf80b0d5b7c 100644
--- a/components/arc/common/arc_bridge.mojom
+++ b/components/arc/common/arc_bridge.mojom
@@ -25,13 +25,14 @@ import "power.mojom";
 import "print.mojom";
 import "process.mojom";
 import "storage_manager.mojom";
+import "trace.mojom";
 import "tts.mojom";
 import "video.mojom";
 import "wallpaper.mojom";
 
-// Next MinVersion: 21
+// Next MinVersion: 22
 // Deprecated method IDs: 101, 105
-// Next method ID: 127
+// Next method ID: 128
 interface ArcBridgeHost {
   // Keep the entries alphabetical. In order to do so without breaking
   // compatibility with the ARC instance, explicitly assign each interface a
@@ -113,6 +114,9 @@ interface ArcBridgeHost {
 
   // Notifies Chrome that the WallpaperInstance interface is ready.
   [MinVersion=18] OnWallpaperInstanceReady@124(WallpaperInstance instance_ptr);
+
+  // Notifies Chrome that the TraceInstance interface is ready.

[Yusuke Sato, 2017/01/17 22:17:21]

Move to L108.

[Earl Ou, 2017/01/18 09:13:21]

Done.

+  [MinVersion=21] OnTraceInstanceReady@127(TraceInstance instance_ptr);
 };
 
 interface ArcBridgeInstance {