DevTools: expose last composited frame metadata on RenderWidgetHostViewPort.

content/browser/devtools/renderer_overrides_handler.h

Index: content/browser/devtools/renderer_overrides_handler.h
diff --git a/content/browser/devtools/renderer_overrides_handler.h b/content/browser/devtools/renderer_overrides_handler.h
index d369ccdf57a9996fe3745c81b8742aa3879300c9..d58098b8afe5b5e1097e273b8070e5fd08a4be1a 100644
--- a/content/browser/devtools/renderer_overrides_handler.h
+++ b/content/browser/devtools/renderer_overrides_handler.h
@@ -13,6 +13,14 @@
 
 class SkBitmap;
 
+namespace cc {
+class CompositorFrameMetadata;
+}
+
+namespace IPC {
+class Message;
+}
+
 namespace content {
 
 class DevToolsAgentHost;
@@ -27,9 +35,11 @@ class RendererOverridesHandler : public DevToolsProtocol::Handler {
   virtual ~RendererOverridesHandler();
 
   void OnClientDetached();
-  void OnSwapCompositorFrame();
+  void OnSwapCompositorFrame(const IPC::Message& message);
 
  private:
+  void InnerSwapCompositorFrame(
+      const cc::CompositorFrameMetadata& metadata);
 
   // DOM domain.
   scoped_refptr<DevToolsProtocol::Response>
@@ -54,7 +64,7 @@ class RendererOverridesHandler : public DevToolsProtocol::Handler {
       scoped_refptr<DevToolsProtocol::Command> command,
       const std::string& format,
       int quality,
-      double scale,
+      const cc::CompositorFrameMetadata& metadata,
       bool success,
       const SkBitmap& bitmap);