Add the ability to write comments to PNGCodec::Encode.

chrome/browser/ui/window_snapshot/window_snapshot_win.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/window_snapshot/window_snapshot.h"
 
 #include "base/win/scoped_gdi_object.h"
 #include "base/win/scoped_hdc.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/gdi_util.h"
 #include "ui/gfx/rect.h"
+#include "ui/gfx/size.h"
 
 namespace browser {
 
 gfx::Rect GrabWindowSnapshot(gfx::NativeWindow window_handle,
                              std::vector<unsigned char>* png_representation) {
   // Create a memory DC that's compatible with the window.
   HDC window_hdc = GetWindowDC(window_handle);
   base::win::ScopedHDC mem_hdc(CreateCompatibleDC(window_hdc));
 
   // Create a DIB that's the same size as the window.
@@ skipping 32 matching lines @@
   // completely on screen).
   if (print_window)
     (*print_window)(window_handle, mem_hdc, 0);
   else
     BitBlt(mem_hdc, 0, 0, width, height, window_hdc, 0, 0, SRCCOPY);
 
   // We now have a copy of the window contents in a DIB, so
   // encode it into a useful format for posting to the bug report
   // server.
   gfx::PNGCodec::Encode(bit_ptr, gfx::PNGCodec::FORMAT_BGRA,
-                        width, height, width * 4, true,
+                        gfx::Size(width, height), width * 4, true,
+                        std::vector<gfx::PNGCodec::Comment>(),
                         png_representation);
 
   ReleaseDC(window_handle, window_hdc);
 
   return gfx::Rect(width, height);
 }
 
 }  // namespace browser