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

skia/ext/bitmap_platform_device_win.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_win.h"
 
 #include "SkMatrix.h"
 #include "SkRefCnt.h"
 #include "SkRegion.h"
 #include "SkUtils.h"
@@ skipping 383 matching lines @@
 
 void BitmapPlatformDeviceWin::postProcessGDI(int x, int y, int width,
                                              int height) {
   processPixels<PostProcessAlphaForGDI>(x, y, width, height);
 }
 
 void BitmapPlatformDeviceWin::makeOpaque(int x, int y, int width, int height) {
   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);
 
   size_t words = bitmap.rowBytes() / sizeof(uint32_t) * bitmap.height();
   for (size_t i = 0; i < words; i++) {
     if (data[i] == kMagicTransparencyColor)
       data[i] = 0;
     else
       data[i] |= 0xFF000000;
   }
 }
 
+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);
   SkAutoLockPixels lock(bitmap);
   uint32_t* data = bitmap.getAddr32(0, 0);
   return static_cast<SkColor>(data[x + y * width()]);
 }
 
 void BitmapPlatformDeviceWin::onAccessBitmap(SkBitmap* bitmap) {
   // FIXME(brettw) OPTIMIZATION: We should only flush if we know a GDI
@@ skipping 25 matching lines @@
       for (int j = 0; j < width; j++) {
         adjustor(data + j);
       }
       data += row_words;
     }
   }
 }
 
 }  // namespace skia