Support in-browser thumbnailing on Windows XP.

chrome/browser/tab_contents/thumbnail_generator.h

Index: chrome/browser/tab_contents/thumbnail_generator.h
diff --git a/chrome/browser/tab_contents/thumbnail_generator.h b/chrome/browser/tab_contents/thumbnail_generator.h
index 14752972ae45c464906c029b8fc9f7d7c29b7d88..79854d35624d1fca18d1bdeb8ffe0e08b0b705fb 100644
--- a/chrome/browser/tab_contents/thumbnail_generator.h
+++ b/chrome/browser/tab_contents/thumbnail_generator.h
@@ -144,7 +144,13 @@ class ThumbnailGenerator : public content::NotificationObserver,
 
   // Called when the bitmap for generating a thumbnail is ready after the
   // AsyncUpdateThumbnail invocation. This runs on the UI thread.
-  void AsyncUpdateThumbnailFinish(
+  void UpdateThumbnailWithBitmap(
+      base::WeakPtr<content::WebContents> web_contents,

[brettw, 2012/07/12 19:20:26]

Can you pass this weak ptr by const ref? Otherwise the copy will have to involve
a bunch of bookkeeping.

[mazda, 2012/07/12 21:23:25]

Done.

+      const SkBitmap& bitmap);
+
+  // Called when the canvas for generating a thumbnail is ready after the
+  // AsyncUpdateThumbnail invocation. This runs on the UI thread.
+  void UpdateThumbnailWithCanvas(
       base::WeakPtr<content::WebContents> web_contents,

[brettw, 2012/07/12 19:20:26]

Ditto for const ref.

[mazda, 2012/07/12 21:23:25]

Done.

       skia::PlatformCanvas* temp_canvas,
       bool result);