Mac: Shift more code into C++ classes from ObjC classes

content/browser/compositor/browser_compositor_view_mac.h

Index: content/browser/compositor/browser_compositor_view_mac.h
diff --git a/content/browser/compositor/browser_compositor_view_mac.h b/content/browser/compositor/browser_compositor_view_mac.h
index 0dc358bbe79a980fb84f0fe9ffe16378dc3db93d..f92945fcb5db8d6a160883ca9c5a43ec77fe89a0 100644
--- a/content/browser/compositor/browser_compositor_view_mac.h
+++ b/content/browser/compositor/browser_compositor_view_mac.h
@@ -18,8 +18,6 @@
 #include "ui/events/latency_info.h"
 #include "ui/gfx/geometry/size.h"
 
-@class BrowserCompositorViewCocoa;
-
 // Additions to the NSView interface for compositor frames.
 @interface NSView (BrowserCompositorView)
 - (void)gotAcceleratedIOSurfaceFrame:(IOSurfaceID)surface_handle
@@ -36,6 +34,8 @@
 
 namespace content {
 
+class BrowserCompositorViewMacInternal;
+
 // The interface through which BrowserCompositorViewMac calls back into
 // RenderWidgetHostViewMac (or any other structure that wishes to draw a
 // NSView backed by a ui::Compositor).
@@ -74,7 +74,7 @@ class BrowserCompositorViewMac {
 
  private:
   BrowserCompositorViewMacClient* client_;
-  base::scoped_nsobject<BrowserCompositorViewCocoa> cocoa_view_;
+  scoped_ptr<BrowserCompositorViewMacInternal> internal_view_;
 };
 
 // A class to keep around whenever a BrowserCompositorViewMac may be created.