Add support for the "repaint" layout tests (LayoutTests/fast/repaint/*), whic...

skia/ext/bitmap_platform_device_win.cc

Index: skia/ext/bitmap_platform_device_win.cc
===================================================================
--- skia/ext/bitmap_platform_device_win.cc	(revision 9433)
+++ skia/ext/bitmap_platform_device_win.cc	(working copy)
@@ -401,8 +401,8 @@
   processPixels<MakeOpaqueAlphaAdjuster>(x, y, width, height);
 }
 
-void BitmapPlatformDeviceWin::fixupAlphaBeforeCompositing() {
-  const SkBitmap& bitmap = accessBitmap(true);
+// static
+void BitmapPlatformDeviceWin::fixupAlpha(SkBitmap& bitmap) {
   SkAutoLockPixels lock(bitmap);
   uint32_t* data = bitmap.getAddr32(0, 0);
 
@@ -415,6 +415,10 @@
   }
 }
 
+void BitmapPlatformDeviceWin::fixupAlphaBeforeCompositing() {
+  fixupAlpha(const_cast<SkBitmap&>(accessBitmap(true)));
+}
+
 // Returns the color value at the specified location.
 SkColor BitmapPlatformDeviceWin::getColorAt(int x, int y) {
   const SkBitmap& bitmap = accessBitmap(false);