Move clipboard-related webkit_glue embedder functions into a ClipboardClient interface.

webkit/glue/webclipboard_impl.h

 // 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.
 
 #ifndef WEBCLIPBOARD_IMPL_H_
 #define WEBCLIPBOARD_IMPL_H_
 
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebClipboard.h"
 #include "ui/base/clipboard/clipboard.h"
 
 #include <string>
 
 namespace webkit_glue {
+class ClipboardClient;
 
 class WebClipboardImpl : public WebKit::WebClipboard {
  public:
   static std::string URLToMarkup(const WebKit::WebURL& url,
       const WebKit::WebString& title);
   static std::string URLToImageMarkup(const WebKit::WebURL& url,
       const WebKit::WebString& title);
 
+  explicit WebClipboardImpl(ClipboardClient* client);
+
   virtual ~WebClipboardImpl();
 
   // WebClipboard methods:
   virtual uint64 getSequenceNumber();
   virtual uint64 sequenceNumber(Buffer buffer);
   virtual bool isFormatAvailable(Format format, Buffer buffer);
   virtual WebKit::WebVector<WebKit::WebString> readAvailableTypes(
       Buffer buffer, bool* contains_filenames);
   virtual WebKit::WebString readPlainText(Buffer buffer);
   virtual WebKit::WebString readHTML(
@@ skipping 12 matching lines @@
       const WebKit::WebURL& url,
       const WebKit::WebString& title);
   virtual void writeImage(
       const WebKit::WebImage& image,
       const WebKit::WebURL& source_url,
       const WebKit::WebString& title);
   virtual void writeDataObject(const WebKit::WebDragData& data);
 
  private:
   bool ConvertBufferType(Buffer, ui::Clipboard::Buffer*);
+  ClipboardClient* client_;
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBCLIPBOARD_IMPL_H_