Rewrite clipboard write IPC handling to be easier to understand.

content/renderer/renderer_clipboard_client.h

Index: content/renderer/renderer_clipboard_client.h
diff --git a/content/renderer/renderer_clipboard_client.h b/content/renderer/renderer_clipboard_client.h
deleted file mode 100644
index ebf46ad75d3015607544a4e6891d1bfeec6a8400..0000000000000000000000000000000000000000
--- a/content/renderer/renderer_clipboard_client.h
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright (c) 2012 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 CONTENT_RENDERER_RENDERER_CLIPBOARD_CLIENT_H_
-#define CONTENT_RENDERER_RENDERER_CLIPBOARD_CLIENT_H_
-
-#include "base/compiler_specific.h"
-#include "content/renderer/clipboard_client.h"
-
-namespace content {
-
-// An implementation of ClipboardClient that gets and sends data over IPC.
-class RendererClipboardClient : public ClipboardClient {
- public:
-  RendererClipboardClient();
-  virtual ~RendererClipboardClient();
-
-  virtual ui::Clipboard* GetClipboard() OVERRIDE;
-  virtual uint64 GetSequenceNumber(ui::ClipboardType type) OVERRIDE;
-  virtual bool IsFormatAvailable(ClipboardFormat format,
-                                 ui::ClipboardType type) OVERRIDE;
-  virtual void Clear(ui::ClipboardType type) OVERRIDE;
-  virtual void ReadAvailableTypes(ui::ClipboardType type,
-                                  std::vector<base::string16>* types,
-                                  bool* contains_filenames) OVERRIDE;
-  virtual void ReadText(ui::ClipboardType type,
-                        base::string16* result) OVERRIDE;
-  virtual void ReadHTML(ui::ClipboardType type,
-                        base::string16* markup,
-                        GURL* url,
-                        uint32* fragment_start,
-                        uint32* fragment_end) OVERRIDE;
-  virtual void ReadRTF(ui::ClipboardType type, std::string* result) OVERRIDE;
-  virtual void ReadImage(ui::ClipboardType type, std::string* data) OVERRIDE;
-  virtual void ReadCustomData(ui::ClipboardType clipboard_type,
-                              const base::string16& type,
-                              base::string16* data) OVERRIDE;
-  virtual WriteContext* CreateWriteContext() OVERRIDE;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_RENDERER_CLIPBOARD_CLIENT_H_