[cc] Adds source_id and sequence_number to BeginFrameArgs.

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index cc1d26880258674da88c599cf8d750fa1455077d..6a826eb2ad50fa9c2ad42096ff1bbe426b9a3c28 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -1518,8 +1518,9 @@ void RenderWidgetHostViewAndroid::StopObservingRootWindow() {
 }
 
 void RenderWidgetHostViewAndroid::SendBeginFrame(cc::BeginFrameArgs args) {
-  TRACE_EVENT1("cc", "RenderWidgetHostViewAndroid::SendBeginFrame",
-               "frame_time_us", args.frame_time.ToInternalValue());
+  TRACE_EVENT2("cc", "RenderWidgetHostViewAndroid::SendBeginFrame",
+               "frame_number", args.sequence_number, "frame_time_us",
+               args.frame_time.ToInternalValue());
 
   // Synchronous compositor does not use deadline-based scheduling.
   // TODO(brianderson): Replace this hardcoded deadline after Android
@@ -1925,7 +1926,7 @@ void RenderWidgetHostViewAndroid::OnBeginFrame(const cc::BeginFrameArgs& args) {
   if (sync_compositor_ && args.type == cc::BeginFrameArgs::MISSED)
     return;
 
-  // Update |last_begin_frame_args_| before handling
+  // crbug.com/675289: Update |last_begin_frame_args_| before handling

[nasko, 2016/12/21 17:31:45]

nit: https:// so code search can linkify it.

[Eric Seckler, 2016/12/22 09:20:27]

Uh, this must have snuck back during rebase. Shouldn't have been here at all.
Removed.

   // |outstanding_begin_frame_requests_| to prevent the BeginFrameSource from
   // sending the same MISSED args in infinite recursion. This may otherwise
   // happen if |host_->FlushInput()| causes a synchronous OnSetNeedsFlushInput()