Monitor VideoResourceUpdater reusing destructed resource in Debug mode.

cc/resources/video_resource_updater.cc

Index: cc/resources/video_resource_updater.cc
diff --git a/cc/resources/video_resource_updater.cc b/cc/resources/video_resource_updater.cc
index e6827ee3315c57c4dc789be81d3220948e547c74..1354e9e59153ba6e9e63b51e851a2769be9b7552 100644
--- a/cc/resources/video_resource_updater.cc
+++ b/cc/resources/video_resource_updater.cc
@@ -132,18 +132,29 @@ bool VideoResourceUpdater::PlaneResourceMatchesUniqueID(
     const PlaneResource& plane_resource,
     const media::VideoFrame* video_frame,
     size_t plane_index) {
-  return plane_resource.frame_ptr == video_frame &&
-         plane_resource.plane_index == plane_index &&
-         plane_resource.timestamp == video_frame->timestamp();
+  if (plane_resource.frame_ptr == video_frame &&
+      plane_resource.plane_index == plane_index &&
+      plane_resource.timestamp == video_frame->timestamp()) {
+    bool video_frame_in_resource;

[miu, 2016/02/22 21:17:37]

There's a helper method in VideoFrameMetadata to avoid having to do all this. 
You can just:

  return plane_resource.frame_ptr == video_frame &&
         video_frame->metadata()->IsTrue(
             media::VideoFrameMetadata::RESOURCE_UPDATER_FLAG) && 
         plane_resource.plane_index == plane_index &&
         plane_resource.timestamp == video_frame->timestamp();

[xjz, 2016/02/23 03:36:03]

Done.

+    if (video_frame->metadata()->GetBoolean(
+            media::VideoFrameMetadata::RESOURCE_UPDATER_FLAG,
+            &video_frame_in_resource))
+      return video_frame_in_resource;
+    else
+      return false;
+  }
+  return false;
 }
 
 void VideoResourceUpdater::SetPlaneResourceUniqueId(
-    const media::VideoFrame* video_frame,
+    media::VideoFrame* video_frame,
     size_t plane_index,
     PlaneResource* plane_resource) {
   plane_resource->frame_ptr = video_frame;
   plane_resource->plane_index = plane_index;
   plane_resource->timestamp = video_frame->timestamp();
+  video_frame->metadata()->SetBoolean(
+      media::VideoFrameMetadata::RESOURCE_UPDATER_FLAG, true);
 }
 
 VideoFrameExternalResources::VideoFrameExternalResources()