Removed requirement for the renderer to know it's process ID

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 5d4560615193a69c3b503a0bb775e30bbcec0ebe..8d0a517f867d3bdb72f5fd2c6141d8cedcf5552f 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -550,6 +550,11 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
       gfx::Size snapshot_size,
       scoped_refptr<base::RefCountedBytes> png_data);
 
+  // Some LatencyComponents generated in the renderer, specifically
+  // WINDOW_SNAPSHOT_FRAME_NUMBER_COMPONENTs, have NULL component IDs.
+  // This function patches them with the correct value.
+  void FixMissingLatencyInfoComponentIds(ui::LatencyInfo& latency_info);

[jbauman, 2014/01/17 00:26:13]

Technically, this should be a pointer, not a reference.

[jam, 2014/01/17 01:27:27]

yep according to style guide it has to be a pointer.

nit: i would name this method AddLatencyInfoComponenttIds since it's not
"missing" as the renderer's job isn't to add it. just nitting because we
wouldn't want someone to see "fix" in the method name and then fix it by
changing the renderer

+
  protected:
   virtual RenderWidgetHostImpl* AsRenderWidgetHostImpl() OVERRIDE;