Add stubs and glue for routing a request for an image from the clipboard.

ui/base/clipboard/clipboard_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.
 
 // Many of these functions are based on those found in
 // webkit/port/platform/PasteboardWin.cpp
 
 #include "ui/base/clipboard/clipboard.h"
 
 #include <shlobj.h>
@@ skipping 386 matching lines @@
   std::string html_fragment(static_cast<const char*>(::GlobalLock(data)));
   ::GlobalUnlock(data);
 
   std::string markup_utf8;
   ClipboardUtil::CFHtmlToHtml(html_fragment, markup ? &markup_utf8 : NULL,
                               src_url);
   if (markup)
     markup->assign(UTF8ToWide(markup_utf8));
 }
 
+void Clipboard::ReadImage(Buffer buffer, std::string* data) const {
+  DCHECK_EQ(buffer, BUFFER_STANDARD);
+  if (!data) {
+    NOTREACHED();
+    return;
+  }
+}
+
 void Clipboard::ReadBookmark(string16* title, std::string* url) const {
   if (title)
     title->clear();
 
   if (url)
     url->clear();
 
   // Acquire the clipboard.
   ScopedClipboard clipboard;
   if (!clipboard.Acquire(GetClipboardWindow()))
@@ skipping 180 matching lines @@
     clipboard_owner_ = ::CreateWindow(L"ClipboardOwnerWindowClass",
                                       L"ClipboardOwnerWindow",
                                       0, 0, 0, 0, 0,
                                       HWND_MESSAGE,
                                       0, 0, 0);
   }
   return clipboard_owner_;
 }
 
 }  // namespace ui