Added message filter receiving frames from compositor

content/browser/android/synchronous_compositor_observer.h

Index: content/browser/android/synchronous_compositor_observer.h
diff --git a/content/browser/android/synchronous_compositor_observer.h b/content/browser/android/synchronous_compositor_observer.h
index 864df1645be9736343bd3e066d95edf867f86073..4b275f49ba798697b5946aac7f99e348388999e8 100644
--- a/content/browser/android/synchronous_compositor_observer.h
+++ b/content/browser/android/synchronous_compositor_observer.h
@@ -8,6 +8,8 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "content/public/browser/android/synchronous_compositor.h"
+#include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/render_process_host_observer.h"
 #include "ui/android/window_android_observer.h"
 
@@ -22,8 +24,10 @@ class SynchronousCompositorHost;
 // SynchronousCompositor class that's tied to the lifetime of a
 // RenderProcessHost. Responsible for its own lifetime.
 class SynchronousCompositorObserver : public RenderProcessHostObserver,
-                                      public ui::WindowAndroidObserver {
+                                      public ui::WindowAndroidObserver,
+                                      public BrowserMessageFilter {
  public:
+  SynchronousCompositorObserver();
   static SynchronousCompositorObserver* GetOrCreateFor(int process_id);
 
   // RenderProcessHostObserver overrides.
@@ -42,10 +46,24 @@ class SynchronousCompositorObserver : public RenderProcessHostObserver,
   void SyncStateAfterVSync(ui::WindowAndroid* window_android,
                            SynchronousCompositorHost* compositor_host);
 
- private:
+  // BrowserMessageFilter overrides.
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+  void SetFrameFuture(
+      const int routing_id,
+      const scoped_refptr<content::SynchronousCompositor::FrameFuture>&
+          frame_future);
+
   explicit SynchronousCompositorObserver(int process_id);
+
+ private:
   ~SynchronousCompositorObserver() override;
 
+  bool ReceiveFrame(const IPC::Message& message);
+
+  std::map<int, scoped_refptr<content::SynchronousCompositor::FrameFuture>>
+      future_map_;
+
   RenderProcessHost* const render_process_host_;
 
   // For synchronizing renderer state after a vsync.