[Android WebView] Implement Ubercomp for Render Thread support

android_webview/browser/shared_renderer_state.h

Index: android_webview/browser/shared_renderer_state.h
diff --git a/android_webview/browser/shared_renderer_state.h b/android_webview/browser/shared_renderer_state.h
index 7959541ec77d2ae213498d576a685f3420224368..8350c9dfc30fcb166873ca9f6c3c8782ba36cad2 100644
--- a/android_webview/browser/shared_renderer_state.h
+++ b/android_webview/browser/shared_renderer_state.h
@@ -7,28 +7,38 @@
 
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/synchronization/lock.h"
+#include "cc/output/compositor_frame.h"
+#include "cc/output/compositor_frame_ack.h"
 #include "content/public/browser/android/synchronous_compositor.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/vector2d.h"
 
+namespace cc {
+class CompositorFrameAck;
+}
+
+namespace gpu {
+class GLInProcessContext;
+}
+
 namespace android_webview {
 
 class BrowserViewRendererClient;
 
 // Set by BrowserViewRenderer and read by HardwareRenderer.
 struct DrawGLInput {
-  unsigned int frame_id;
   gfx::Rect global_visible_rect;
   gfx::Vector2d scroll_offset;
   int width;
   int height;
+  cc::CompositorFrame frame;
 
   DrawGLInput();
+  ~DrawGLInput();
 };
 
 // Set by HardwareRenderer and read by BrowserViewRenderer.
 struct DrawGLResult {
-  unsigned int frame_id;
   bool clip_contains_visible_rect;
 
   DrawGLResult();
@@ -58,8 +68,8 @@ class SharedRendererState {
 
   void SetMemoryPolicyDirty(bool is_dirty);
   bool IsMemoryPolicyDirty() const;
-  void SetDrawGLInput(const DrawGLInput& input);
-  DrawGLInput GetDrawGLInput() const;
+  void SetDrawGLInput(scoped_ptr<DrawGLInput> input);
+  scoped_ptr<DrawGLInput> PassDrawGLInput();
 
   // Set by UI and read by RT.
   void SetHardwareAllowed(bool allowed);
@@ -69,6 +79,14 @@ class SharedRendererState {
   void SetHardwareInitialized(bool initialized);
   bool IsHardwareInitialized() const;
 
+  void SetSharedContext(gpu::GLInProcessContext* context);
+  gpu::GLInProcessContext* GetSharedContext() const;
+
+  void ReturnResources(const cc::TransferableResourceArray& input);
+  void InsertReturnedResources(const cc::ReturnedResourceArray& resources);
+  void SwapReturnedResources(cc::ReturnedResourceArray* resources);
+  bool ReturnedResourcesEmpty() const;
+
  private:
   void ClientRequestDrawGLOnUIThread();
 
@@ -85,9 +103,11 @@ class SharedRendererState {
   // Set to true when SetMemoryPolicy called with a different memory policy.
   // Set to false when memory policy is read and enforced to compositor.
   bool memory_policy_dirty_;
-  DrawGLInput draw_gl_input_;
+  scoped_ptr<DrawGLInput> draw_gl_input_;
   bool hardware_allowed_;
   bool hardware_initialized_;
+  gpu::GLInProcessContext* share_context_;
+  cc::ReturnedResourceArray returned_resources_;
 };
 
 }  // namespace android_webview