Add GrabWindowSnapshot method to mac_util class. This code is due to dmaclac...

base/mac_util.h

-// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2008-2009 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.
 
 #ifndef BASE_MAC_UTIL_H_
 #define BASE_MAC_UTIL_H_
 
 #include <Carbon/Carbon.h>
 #include <string>
+#include <vector>
 
 class FilePath;
 
 #ifdef __OBJC__
 @class NSBundle;
+@class NSWindow;
 #else
 class NSBundle;
+class NSWindow;
 #endif
 
 namespace mac_util {
 
 std::string PathFromFSRef(const FSRef& ref);
 bool FSRefFromPath(const std::string& path, FSRef* ref);
 
 // Returns true if the application is running from a bundle
 bool AmIBundled();
 
@@ skipping 38 matching lines @@
 // fullscreen windows.  For example, if the menu bar is not currently
 // hidden, this will hide it.  Must be called on main thread.
 void RequestFullScreen();
 
 // Release a request for full screen mode.  As with RequestFullScree(), this
 // does not affect windows directly, but rather manages per-application state.
 // For example, if there are no other outstanding requests for full screen,
 // this will show the menu bar.  Must be called on main thread.
 void ReleaseFullScreen();
 
+// Pulls a snapshot of the entire browser into png_representation.
+void GrabWindowSnapshot(NSWindow* window,
+                        std::vector<unsigned char>* png_representation);
 }  // namespace mac_util
 
 #endif  // BASE_MAC_UTIL_H_