Gets BackingStoreSkia to work on windows.

content/browser/renderer_host/backing_store_skia.cc

Index: content/browser/renderer_host/backing_store_skia.cc
diff --git a/content/browser/renderer_host/backing_store_skia.cc b/content/browser/renderer_host/backing_store_skia.cc
index 8c79958c2ffd9d3f0b2134c7e7b85e2142ba1c11..c11e8c1a3ff00e3ca46dbc9d0cc35329b7439415 100644
--- a/content/browser/renderer_host/backing_store_skia.cc
+++ b/content/browser/renderer_host/backing_store_skia.cc
@@ -60,8 +60,18 @@ void BackingStoreSkia::PaintToBackingStore(
   if (!dib)
     return;
 
+  SkBitmap b;
+#if defined(OS_WIN)
+  // Creating a platform canvas on windows results in attempting to map the

[brettw, 2011/07/01 22:26:22]

Actually your new code is better on all platforms. Can you just delete the old
code?

+  // memory again (by CreateDIBSection). We want to avoid that, so we directly
+  // create the bitmap.
+  b.setConfig(SkBitmap::kARGB_8888_Config, width, height);
+  b.setPixels(dib->memory());
+#else
   scoped_ptr<skia::PlatformCanvas> p_canvas(
       dib->GetPlatformCanvas(width, height));
+  b = skia::GetTopDevice(*p_canvas)->accessBitmap(false);
+#endif
   for (size_t i = 0; i < copy_rects.size(); i++) {
     const gfx::Rect& copy_rect = copy_rects[i];
     int x = copy_rect.x() - bitmap_rect.x();
@@ -72,7 +82,6 @@ void BackingStoreSkia::PaintToBackingStore(
     SkRect dstrect = SkRect::MakeXYWH(
         SkIntToScalar(copy_rect.x()), SkIntToScalar(copy_rect.y()),
         SkIntToScalar(w), SkIntToScalar(h));
-    SkBitmap b = skia::GetTopDevice(*p_canvas)->accessBitmap(false);
     canvas_.get()->drawBitmapRect(b, &srcrect, dstrect);
   }
 }