Add a path to use CALayers to display content

content/browser/renderer_host/compositing_iosurface_mac.h

Index: content/browser/renderer_host/compositing_iosurface_mac.h
diff --git a/content/browser/renderer_host/compositing_iosurface_mac.h b/content/browser/renderer_host/compositing_iosurface_mac.h
index 2f1e11a2e01153db5759af5a1a716b5185e41dfc..2200de301c5c2ac21d7ed6c10057fb53dd01328f 100644
--- a/content/browser/renderer_host/compositing_iosurface_mac.h
+++ b/content/browser/renderer_host/compositing_iosurface_mac.h
@@ -37,6 +37,7 @@ class CompositingIOSurfaceContext;
 class CompositingIOSurfaceShaderPrograms;
 class CompositingIOSurfaceTransformer;
 class RenderWidgetHostViewFrameSubscriber;
+class RenderWidgetHostViewMac;
 
 // This class manages an OpenGL context and IOSurface for the accelerated
 // compositing code path. The GL context is attached to
@@ -55,6 +56,8 @@ class CompositingIOSurfaceMac {
   // window.
   static CompositingIOSurfaceMac* Create(int window_number,
                                          SurfaceOrder order);
+  static CompositingIOSurfaceMac* Create(
+      const scoped_refptr<CompositingIOSurfaceContext>& context);
   ~CompositingIOSurfaceMac();
 
   // Set IOSurface that will be drawn on the next NSView drawRect.
@@ -65,16 +68,15 @@ class CompositingIOSurfaceMac {
   // Get the CGL renderer ID currently associated with this context.
   int GetRendererID();
 
-  // Blit the IOSurface at the upper-left corner of the |view|. If |view| window
-  // size is larger than the IOSurface, the remaining right and bottom edges
-  // will be white. |scaleFactor| is 1 in normal views, 2 in HiDPI views.
-  // |frame_subscriber| listens to this draw event and provides output buffer
-  // for copying this frame into.
-  void DrawIOSurface(NSView* view,
-                     float scale_factor,
-                     int window_number,
-                     SurfaceOrder surface_order,
+  // Blit the IOSurface at the upper-left corner of the of the specified
+  // window_size. If the window size is larger than the IOSurface, the
+  // remaining right and bottom edges will be white. |scaleFactor| is 1
+  // in normal views, 2 in HiDPI views.  |frame_subscriber| listens to
+  // this draw event and provides output buffer for copying this frame into.
+  void DrawIOSurface(const gfx::Size& window_size,
+                     float window_scale_factor,
                      RenderWidgetHostViewFrameSubscriber* frame_subscriber);
+  void DrawIOSurface(RenderWidgetHostViewMac* render_widget_host_view);
 
   // Copy the data of the "live" OpenGL texture referring to this IOSurfaceRef
   // into |out|. The copied region is specified with |src_pixel_subrect| and
@@ -113,9 +115,14 @@ class CompositingIOSurfaceMac {
   }
   // In cocoa view units / DIPs.
   const gfx::Size& dip_io_surface_size() const { return dip_io_surface_size_; }
+  float scale_factor() const { return scale_factor_; }
 
   bool is_vsync_disabled() const;
 
+  const scoped_refptr<CompositingIOSurfaceContext>& context() {
+    return context_;
+  }
+
   // Get vsync scheduling parameters.
   // |interval_numerator/interval_denominator| equates to fractional number of
   // seconds between vsyncs.
@@ -222,7 +229,7 @@ class CompositingIOSurfaceMac {
 
   CompositingIOSurfaceMac(
       IOSurfaceSupport* io_surface_support,
-      scoped_refptr<CompositingIOSurfaceContext> context);
+      const scoped_refptr<CompositingIOSurfaceContext>& context);
 
   void SetupCVDisplayLink();
 
@@ -315,6 +322,7 @@ class CompositingIOSurfaceMac {
   // The width and height of the io surface.
   gfx::Size pixel_io_surface_size_;  // In pixels.
   gfx::Size dip_io_surface_size_;  // In view / density independent pixels.
+  float scale_factor_;
 
   // The "live" OpenGL texture referring to this IOSurfaceRef. Note
   // that per the CGLTexImageIOSurface2D API we do not need to