Removal of dependencies on PlatformDevice classes.

skia/ext/platform_canvas_mac.cc

Index: skia/ext/platform_canvas_mac.cc
===================================================================
--- skia/ext/platform_canvas_mac.cc	(revision 85672)
+++ skia/ext/platform_canvas_mac.cc	(working copy)
@@ -4,7 +4,7 @@
 
 #include "skia/ext/platform_canvas.h"
 
-#include "skia/ext/bitmap_platform_device_mac.h"
+#include "skia/ext/bitmap_platform_device.h"
 #include "third_party/skia/include/core/SkTypes.h"
 
 namespace skia {
@@ -50,11 +50,11 @@
 }
 
 CGContextRef PlatformCanvas::beginPlatformPaint() const {
-  return getTopPlatformDevice().BeginPlatformPaint();
+  return platform_util::BeginPlatformPaint(&getTopDevice());
 }
 
 void PlatformCanvas::endPlatformPaint() const {
-  getTopPlatformDevice().EndPlatformPaint();
+  platform_util::EndPlatformPaint(&getTopDevice());
 }
 
 }  // namespace skia