Removal of dependencies on PlatformDevice classes.

skia/ext/platform_canvas.cc

Index: skia/ext/platform_canvas.cc
===================================================================
--- skia/ext/platform_canvas.cc	(revision 86706)
+++ skia/ext/platform_canvas.cc	(working copy)
@@ -7,14 +7,6 @@
 #include "skia/ext/bitmap_platform_device.h"
 #include "third_party/skia/include/core/SkTypes.h"
 
-namespace {
-skia::PlatformDevice* GetTopPlatformDevice(const SkCanvas* canvas) {
-  // All of our devices should be our special PlatformDevice.
-  SkCanvas::LayerIter iter(const_cast<SkCanvas*>(canvas), false);
-  return static_cast<skia::PlatformDevice*>(iter.device());
-}
-}
-
 namespace skia {
 
 PlatformCanvas::PlatformCanvas() {
@@ -29,10 +21,6 @@
   return NULL;
 }
 
-PlatformDevice& PlatformCanvas::getTopPlatformDevice() const {
-  return *GetTopPlatformDevice(this);
-}
-
 // static
 size_t PlatformCanvas::StrideForWidth(unsigned width) {
   return 4 * width;
@@ -51,18 +39,32 @@
   return new PlatformCanvas(width, height, is_opaque);
 }
 
+SkDevice* GetTopDevice(const SkCanvas& canvas) {
+  SkCanvas::LayerIter iter(const_cast<SkCanvas*>(&canvas), false);
+  return iter.device();
+}
+
 bool SupportsPlatformPaint(const SkCanvas* canvas) {
-  // TODO(alokp): Rename PlatformDevice::IsNativeFontRenderingAllowed after
-  // removing these calls from WebKit.
-  return GetTopPlatformDevice(canvas)->IsNativeFontRenderingAllowed();
+  // TODO(alokp): Rename IsNativeFontRenderingAllowed after removing these
+  // calls from WebKit.
+  return IsNativeFontRenderingAllowed(GetTopDevice(*canvas));
 }
 
-PlatformDevice::PlatformSurface BeginPlatformPaint(SkCanvas* canvas) {
-  return GetTopPlatformDevice(canvas)->BeginPlatformPaint();
+PlatformSurface BeginPlatformPaint(SkCanvas* canvas) {
+  return BeginPlatformPaint(GetTopDevice(*canvas));
 }
 
 void EndPlatformPaint(SkCanvas* canvas) {
-  GetTopPlatformDevice(canvas)->EndPlatformPaint();
+  EndPlatformPaint(GetTopDevice(*canvas));
 }
 
+void DrawToNativeContext(SkCanvas* canvas, PlatformSurface context, int x,
+                         int y, const PlatformRect* src_rect) {
+  DrawToNativeContext(GetTopDevice(*canvas), context, x, y, src_rect);
+}
+
+void MakeOpaque(SkCanvas* canvas, int x, int y, int width, int height) {
+  MakeOpaque(GetTopDevice(*canvas), x, y, width, height);
+}
+
 }  // namespace skia