Refactor the PlatformContext layer to have only one class.

skia/ext/bitmap_platform_device_mac.h

Index: skia/ext/bitmap_platform_device_mac.h
diff --git a/skia/ext/bitmap_platform_device_mac.h b/skia/ext/bitmap_platform_device_mac.h
index 0cf483fe7b53effa55d469f3a4c56fa5dac87256..6580302cc092d8b786b4968243c3341865462547 100644
--- a/skia/ext/bitmap_platform_device_mac.h
+++ b/skia/ext/bitmap_platform_device_mac.h
@@ -11,7 +11,7 @@ namespace skia {
 
 // A device is basically a wrapper around SkBitmap that provides a surface for
 // SkCanvas to draw into. Our device provides a surface CoreGraphics can also
-// write to. BitmapPlatformDeviceMac creates a bitmap using
+// write to. BitmapPlatformDevice creates a bitmap using
 // CGCreateBitmapContext() in a format that Skia supports and can then use this
 // to draw text into, etc. This pixel data is provided to the bitmap that the
 // device contains so that it can be shared.
@@ -23,7 +23,7 @@ namespace skia {
 // For us, that other bitmap will become invalid as soon as the device becomes
 // invalid, which may lead to subtle bugs. Therefore, DO NOT ASSIGN THE
 // DEVICE'S PIXEL DATA TO ANOTHER BITMAP, make sure you copy instead.
-class BitmapPlatformDeviceMac : public PlatformDeviceMac {
+class BitmapPlatformDevice : public PlatformDevice {
  public:
   // Factory function. The screen DC is used to create the bitmap, and will not
   // be stored beyond this function. is_opaque should be set if the caller
@@ -32,10 +32,10 @@ class BitmapPlatformDeviceMac : public PlatformDeviceMac {
   // The shared_section parameter is optional (pass NULL for default behavior).
   // If shared_section is non-null, then it must be a handle to a file-mapping
   // object returned by CreateFileMapping.  See CreateDIBSection for details.
-  static BitmapPlatformDeviceMac* Create(CGContextRef context,
-                                         int width,
-                                         int height,
-                                         bool is_opaque);
+  static BitmapPlatformDevice* Create(CGContextRef context,
+                                      int width,
+                                      int height,
+                                      bool is_opaque);
 
   // Copy constructor. When copied, devices duplicate their internal data, so
   // stay linked. This is because their implementation is very heavyweight
@@ -48,11 +48,11 @@ class BitmapPlatformDeviceMac : public PlatformDeviceMac {
   //
   // Copy constucting and "=" is designed for saving the device or passing it
   // around to another routine willing to deal with the bitmap data directly.
-  BitmapPlatformDeviceMac(const BitmapPlatformDeviceMac& other);
-  virtual ~BitmapPlatformDeviceMac();
+  BitmapPlatformDevice(const BitmapPlatformDevice& other);
+  virtual ~BitmapPlatformDevice();
 
   // See warning for copy constructor above.
-  BitmapPlatformDeviceMac& operator=(const BitmapPlatformDeviceMac& other);
+  BitmapPlatformDevice& operator=(const BitmapPlatformDevice& other);
 
   virtual CGContextRef GetBitmapContext();
   virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region);
@@ -69,10 +69,10 @@ class BitmapPlatformDeviceMac : public PlatformDeviceMac {
   // Reference counted data that can be shared between multiple devices. This
   // allows copy constructors and operator= for devices to work properly. The
   // bitmaps used by the base device class are already refcounted and copyable.
-  class BitmapPlatformDeviceMacData;
+  class BitmapPlatformDeviceData;
 
-  BitmapPlatformDeviceMac(BitmapPlatformDeviceMacData* data,
-                          const SkBitmap& bitmap);
+  BitmapPlatformDevice(BitmapPlatformDeviceData* data,
+                       const SkBitmap& bitmap);
 
   // Flushes the CoreGraphics context so that the pixel data can be accessed
   // directly by Skia. Overridden from SkDevice, this is called when Skia
@@ -85,7 +85,7 @@ class BitmapPlatformDeviceMac : public PlatformDeviceMac {
 
   // Data associated with this device, guaranteed non-null. We hold a reference
   // to this object.
-  BitmapPlatformDeviceMacData* data_;
+  BitmapPlatformDeviceData* data_;
 };
 
 }  // namespace skia