Removal of dependencies on PlatformDevice classes.

skia/ext/platform_device_mac.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/bitmap_platform_device_mac.h"
+#include "skia/ext/platform_device.h"
+#include "skia/ext/bitmap_platform_device.h"
 
 #import <ApplicationServices/ApplicationServices.h>
 #include "skia/ext/skia_utils_mac.h"
 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkTypes.h"
 #include "third_party/skia/include/core/SkUtils.h"
 
 namespace skia {
 
 namespace {
 
+#if 0
 // Constrains position and size to fit within available_size.
 bool constrain(int available_size, int* position, int *size) {
   if (*position < 0) {
     *size += *position;
     *position = 0;
   }
   if (*size > 0 && *position < available_size) {
     int overflow = (*position + *size) - available_size;
     if (overflow > 0) {
       *size -= overflow;
     }
     return true;
   }
   return false;
 }
+#endif
 
 } // namespace
 
+namespace platform_util {
+
+void DrawToContext(SkDevice* device, CGContextRef context, int x, int y,
+                   const CGRect* src_rect) {
+  PlatformDevice* platform_device = GetPlatformDevice(device);
+  if (platform_device)
+    platform_device->DrawToContext(context, x, y, src_rect);
+}
+
+CGContextRef GetBitmapContext(SkDevice* device) {
+  PlatformDevice* platform_device = GetPlatformDevice(device);
+  if (platform_device)
+    return platform_device->GetBitmapContext();
+
+  return NULL;
+}
+
+}
+
 PlatformDevice::PlatformDevice(const SkBitmap& bitmap)
     : SkDevice(NULL, bitmap, /*isForLayer=*/false) {
+  SetPlatformDevice(this, this);
 }
 
 bool PlatformDevice::IsNativeFontRenderingAllowed() {
     return true;
 }
 
 CGContextRef PlatformDevice::BeginPlatformPaint() {
   return GetBitmapContext();
 }
 
@@ skipping 118 matching lines @@
     path.transform(transformation);
     // TODO(playmobil): Implement.
     SkASSERT(false);
     // LoadPathToDC(context, path);
     // hrgn = PathToRegion(context);
   }
 }
 
 }  // namespace skia