Implement new RPDQ copy logic for CALayer promotion.

cc/output/gl_renderer.h

Index: cc/output/gl_renderer.h
diff --git a/cc/output/gl_renderer.h b/cc/output/gl_renderer.h
index 4261f10814e206e944cb84fc327cd1c658ecd5b0..465935ee65a042d1aab30aa837f68f123b892983 100644
--- a/cc/output/gl_renderer.h
+++ b/cc/output/gl_renderer.h
@@ -274,6 +274,15 @@ class CC_EXPORT GLRenderer : public DirectRenderer {
   // |resource|. The resource is allocated from |overlay_resource_pool_|.
   void CopyRenderPassToOverlayResource(const RenderPassId& render_pass_id,
                                        Resource** resource);
+  // Copies the contents of the render pass draw quad, including filter effects,
+  // to an overlay resource, returned in |resource|. The resource is allocated
+  // from |overlay_resource_pool_|.
+  // The resulting Resource may be larger than the original quad, so this
+  // function may also modify properties of CALayerOverlay, including
+  // |shared_state|.
+  void CopyRenderPassDrawQuadToOverlayResource(CALayerOverlay* ca_layer_overlay,
+                                               Resource** resource,
+                                               DrawingFrame* frame);
 
   using OverlayResourceLock =
       std::unique_ptr<ResourceProvider::ScopedReadLockGL>;
@@ -537,6 +546,13 @@ class CC_EXPORT GLRenderer : public DirectRenderer {
   // overlay resource. This means the GLRenderer needs its own ResourcePool.
   std::unique_ptr<ResourcePool> overlay_resource_pool_;
 
+  // The method FlippedFramebuffer determines whether the framebuffer associated
+  // with a DrawingFrame is flipped. It makes the assumption that the
+  // DrawingFrame is being used as part of a render pass. If a DrawingFrame is
+  // not being used as part of a render pass, setting it here forces
+  // FlippedFramebuffer to return |true|.
+  const DrawingFrame* force_drawing_frame_framebuffer_flipped_;
+
   BoundGeometry bound_geometry_;
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };