Refactor the PlatformContext layer to have only one class.

skia/ext/vector_canvas.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "skia/ext/vector_canvas.h"
 
-#include "skia/ext/vector_device.h"
+#include "skia/ext/bitmap_platform_device_win.h"
+#include "skia/ext/vector_platform_device_win.h"
 
 namespace skia {
 
 VectorCanvas::VectorCanvas() {
 }
 
 VectorCanvas::VectorCanvas(HDC dc, int width, int height) {
   bool initialized = initialize(dc, width, height);
   if (!initialized)
     __debugbreak();
 }
 
 VectorCanvas::~VectorCanvas() {
 }
 
 bool VectorCanvas::initialize(HDC context, int width, int height) {
   SkDevice* device = createPlatformDevice(width, height, true, context);
   if (!device)
     return false;
 
   setDevice(device);
   device->unref();  // was created with refcount 1, and setDevice also refs
   return true;
 }
 
 SkBounder* VectorCanvas::setBounder(SkBounder* bounder) {
   if (!IsTopDeviceVectorial())
-    return PlatformCanvasWin::setBounder(bounder);
+    return PlatformCanvas::setBounder(bounder);
 
   // This function isn't used in the code. Verify this assumption.
   SkASSERT(false);
   return NULL;
 }
 
 SkDevice* VectorCanvas::createDevice(SkBitmap::Config config,
                                      int width, int height,
                                      bool is_opaque, bool isForLayer) {
   SkASSERT(config == SkBitmap::kARGB_8888_Config);
   return createPlatformDevice(width, height, is_opaque, NULL);
 }
 
 SkDrawFilter* VectorCanvas::setDrawFilter(SkDrawFilter* filter) {
   // This function isn't used in the code. Verify this assumption.
   SkASSERT(false);
   return NULL;
 }
 
 SkDevice* VectorCanvas::createPlatformDevice(int width,
                                              int height, bool is_opaque,
                                              HANDLE shared_section) {
   if (!is_opaque) {
     // TODO(maruel):  http://b/1184002 1184002 When restoring a semi-transparent
     // layer, i.e. merging it, we need to rasterize it because GDI doesn't
     // support transparency except for AlphaBlend(). Right now, a
-    // BitmapPlatformDeviceWin is created when VectorCanvas think a saveLayers()
+    // BitmapPlatformDevice is created when VectorCanvas think a saveLayers()
     // call is being done. The way to save a layer would be to create an
     // EMF-based VectorDevice and have this device registers the drawing. When
     // playing back the device into a bitmap, do it at the printer's dpi instead
     // of the layout's dpi (which is much lower).
-    return PlatformCanvasWin::createPlatformDevice(width, height, is_opaque,
-                                                shared_section);
+    return BitmapPlatformDevice::create(width, height,
+                                        is_opaque, shared_section);
   }
 
   // TODO(maruel):  http://b/1183870 Look if it would be worth to increase the
   // resolution by ~10x (any worthy factor) to increase the rendering precision
   // (think about printing) while using a relatively low dpi. This happens
   // because we receive float as input but the GDI functions works with
   // integers. The idea is to premultiply the matrix with this factor and
   // multiply each SkScalar that are passed to SkScalarRound(value) as
   // SkScalarRound(value * 10). Safari is already doing the same for text
   // rendering.
   SkASSERT(shared_section);
-  PlatformDeviceWin* device = VectorDevice::create(
+  PlatformDevice* device = VectorPlatformDevice::create(
       reinterpret_cast<HDC>(shared_section), width, height);
   return device;
 }
 
 bool VectorCanvas::IsTopDeviceVectorial() const {
   return getTopPlatformDevice().IsVectorial();
 }
 
 }  // namespace skia