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

This moves the functions into a pattern that is component-friendly.

BUG=98755
TEST=Chrome, DRT, test_shell

Review URL: http://codereview.chromium.org/8591030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@111097 0039d316-1c4b-4281-b951-d872f2087c98

18 files changed, 415 insertions, 228 deletions

diff --git a/content/content_renderer.gypi b/content/content_renderer.gypi
index 88f46cd..fbc9bc0 100644
--- a/content/content_renderer.gypi
+++ b/content/content_renderer.gypi
@@ -142,6 +142,8 @@
     'renderer/render_widget_fullscreen_pepper.h',
     'renderer/renderer_accessibility.cc',
     'renderer/renderer_accessibility.h',
+    'renderer/renderer_clipboard_client.cc',
+    'renderer/renderer_clipboard_client.h',
     'renderer/renderer_glue.cc',
     'renderer/renderer_main.cc',
     'renderer/renderer_main_platform_delegate.h',
diff --git a/content/renderer/renderer_clipboard_client.cc b/content/renderer/renderer_clipboard_client.cc
new file mode 100644
index 0000000..d87d527
--- /dev/null
+++ b/content/renderer/renderer_clipboard_client.cc
@@ -0,0 +1,175 @@
+// 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.
+
+// This file provides the embedder's side of random webkit glue functions.
+
+#include "content/renderer/renderer_clipboard_client.h"
+
+#include "build/build_config.h"
+
+#include <string>
+#include <vector>
+
+#include "base/shared_memory.h"
+#include "base/string16.h"
+#include "content/common/clipboard_messages.h"
+#include "content/public/renderer/content_renderer_client.h"
+#include "content/renderer/render_thread_impl.h"
+#include "ui/base/clipboard/clipboard.h"
+#include "ui/gfx/size.h"
+#include "webkit/glue/scoped_clipboard_writer_glue.h"
+
+namespace {
+
+class RendererClipboardWriteContext :
+    public webkit_glue::ClipboardClient::WriteContext {
+ public:
+  RendererClipboardWriteContext();
+  virtual ~RendererClipboardWriteContext();
+  virtual void WriteBitmapFromPixels(ui::Clipboard::ObjectMap* objects,
+                                     const void* pixels,
+                                     const gfx::Size& size);
+  virtual void FlushAndDestroy(const ui::Clipboard::ObjectMap& objects);
+
+ private:
+  scoped_ptr<base::SharedMemory> shared_buf_;
+  DISALLOW_COPY_AND_ASSIGN(RendererClipboardWriteContext);
+};
+
+RendererClipboardWriteContext::RendererClipboardWriteContext() {
+}
+
+RendererClipboardWriteContext::~RendererClipboardWriteContext() {
+}
+
+// This definition of WriteBitmapFromPixels uses shared memory to communicate
+// across processes.
+void RendererClipboardWriteContext::WriteBitmapFromPixels(
+    ui::Clipboard::ObjectMap* objects,
+    const void* pixels,
+    const gfx::Size& size) {
+  // Do not try to write a bitmap more than once
+  if (shared_buf_.get())
+    return;
+
+  uint32 buf_size = 4 * size.width() * size.height();
+
+  // Allocate a shared memory buffer to hold the bitmap bits.
+  shared_buf_.reset(ChildThread::current()->AllocateSharedMemory(buf_size));
+  if (!shared_buf_.get())
+    return;
+
+  // Copy the bits into shared memory
+  DCHECK(shared_buf_->memory());
+  memcpy(shared_buf_->memory(), pixels, buf_size);
+  shared_buf_->Unmap();
+
+  ui::Clipboard::ObjectMapParam size_param;
+  const char* size_data = reinterpret_cast<const char*>(&size);
+  for (size_t i = 0; i < sizeof(gfx::Size); ++i)
+    size_param.push_back(size_data[i]);
+
+  ui::Clipboard::ObjectMapParams params;
+
+  // The first parameter is replaced on the receiving end with a pointer to
+  // a shared memory object containing the bitmap. We reserve space for it here.
+  ui::Clipboard::ObjectMapParam place_holder_param;
+  params.push_back(place_holder_param);
+  params.push_back(size_param);
+  (*objects)[ui::Clipboard::CBF_SMBITMAP] = params;
+}
+
+// Define a destructor that makes IPCs to flush the contents to the
+// system clipboard.
+void RendererClipboardWriteContext::FlushAndDestroy(
+    const ui::Clipboard::ObjectMap& objects) {
+  scoped_ptr<RendererClipboardWriteContext> delete_on_return(this);
+  if (objects.empty())
+    return;
+
+  if (shared_buf_.get()) {
+    RenderThreadImpl::current()->Send(
+        new ClipboardHostMsg_WriteObjectsSync(objects, shared_buf_->handle()));
+  } else {
+    RenderThreadImpl::current()->Send(
+        new ClipboardHostMsg_WriteObjectsAsync(objects));
+  }
+}
+
+}  // anonymous namespace
+
+RendererClipboardClient::RendererClipboardClient() {
+}
+
+RendererClipboardClient::~RendererClipboardClient() {
+}
+
+ui::Clipboard* RendererClipboardClient::GetClipboard() {
+  return NULL;
+}
+
+uint64 RendererClipboardClient::GetSequenceNumber(
+    ui::Clipboard::Buffer buffer) {
+  uint64 sequence_number = 0;
+  RenderThreadImpl::current()->Send(
+      new ClipboardHostMsg_GetSequenceNumber(buffer,
+                                             &sequence_number));
+  return sequence_number;
+}
+
+bool RendererClipboardClient::IsFormatAvailable(
+    const ui::Clipboard::FormatType& format,
+    ui::Clipboard::Buffer buffer) {
+  bool result;
+  RenderThreadImpl::current()->Send(
+      new ClipboardHostMsg_IsFormatAvailable(format, buffer, &result));
+  return result;
+}
+
+void RendererClipboardClient::ReadAvailableTypes(
+    ui::Clipboard::Buffer buffer,
+    std::vector<string16>* types,
+    bool* contains_filenames) {
+  RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadAvailableTypes(
+      buffer, types, contains_filenames));
+}
+
+void RendererClipboardClient::ReadText(ui::Clipboard::Buffer buffer,
+                                       string16* result) {
+  RenderThreadImpl::current()->Send(
+      new ClipboardHostMsg_ReadText(buffer, result));
+}
+
+void RendererClipboardClient::ReadAsciiText(ui::Clipboard::Buffer buffer,
+                                            std::string* result) {
+  RenderThreadImpl::current()->Send(
+      new ClipboardHostMsg_ReadAsciiText(buffer, result));
+}
+
+void RendererClipboardClient::ReadHTML(ui::Clipboard::Buffer buffer,
+                                       string16* markup,
+                                       GURL* url, uint32* fragment_start,
+                                       uint32* fragment_end) {
+  RenderThreadImpl::current()->Send(
+      new ClipboardHostMsg_ReadHTML(buffer, markup, url, fragment_start,
+                                    fragment_end));
+}
+
+void RendererClipboardClient::ReadImage(ui::Clipboard::Buffer buffer,
+                                        std::string* data) {
+  base::SharedMemoryHandle image_handle;
+  uint32 image_size;
+  RenderThreadImpl::current()->Send(
+      new ClipboardHostMsg_ReadImage(buffer, &image_handle, &image_size));
+  if (base::SharedMemory::IsHandleValid(image_handle)) {
+    base::SharedMemory buffer(image_handle, true);
+    buffer.Map(image_size);
+    data->append(static_cast<char*>(buffer.memory()), image_size);
+  }
+}
+
+webkit_glue::ClipboardClient::WriteContext*
+RendererClipboardClient::CreateWriteContext() {
+  return new RendererClipboardWriteContext;
+}
diff --git a/content/renderer/renderer_clipboard_client.h b/content/renderer/renderer_clipboard_client.h
new file mode 100644
index 0000000..46c7db1
--- /dev/null
+++ b/content/renderer/renderer_clipboard_client.h
@@ -0,0 +1,33 @@
+// 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 CONTENT_RENDERER_RENDERER_CLIPBOARD_CLIENT_H_
+#define CONTENT_RENDERER_RENDERER_CLIPBOARD_CLIENT_H_
+
+#include "webkit/glue/clipboard_client.h"
+
+// An implementation of ClipboardClient that gets and sends data over IPC.
+class RendererClipboardClient : public webkit_glue::ClipboardClient {
+ public:
+  RendererClipboardClient();
+  virtual ~RendererClipboardClient();
+
+  virtual ui::Clipboard* GetClipboard();
+  virtual uint64 GetSequenceNumber(ui::Clipboard::Buffer buffer);
+  virtual bool IsFormatAvailable(const ui::Clipboard::FormatType& format,
+                                 ui::Clipboard::Buffer buffer);
+  virtual void ReadAvailableTypes(ui::Clipboard::Buffer buffer,
+                                  std::vector<string16>* types,
+                                  bool* contains_filenames);
+  virtual void ReadText(ui::Clipboard::Buffer buffer, string16* result);
+  virtual void ReadAsciiText(ui::Clipboard::Buffer buffer,
+                             std::string* result);
+  virtual void ReadHTML(ui::Clipboard::Buffer buffer, string16* markup,
+                        GURL* url, uint32* fragment_start,
+                        uint32* fragment_end);
+  virtual void ReadImage(ui::Clipboard::Buffer buffer, std::string* data);
+  virtual WriteContext* CreateWriteContext();
+};
+
+#endif  // CONTENT_RENDERER_RENDERER_CLIPBOARD_CLIENT_H_
diff --git a/content/renderer/renderer_glue.cc b/content/renderer/renderer_glue.cc
index 4ef9d28..054f66d 100644
--- a/content/renderer/renderer_glue.cc
+++ b/content/renderer/renderer_glue.cc
@@ -6,149 +6,21 @@
 
 #include "build/build_config.h"
 
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
-
 #include <vector>
 
-#include "base/command_line.h"
-#include "base/memory/ref_counted.h"
-#include "base/shared_memory.h"
-#include "base/string_util.h"
-#include "content/common/clipboard_messages.h"
-#include "content/common/npobject_util.h"
+#include "base/string16.h"
+#include "base/string_piece.h"
 #include "content/common/socket_stream_dispatcher.h"
 #include "content/common/view_messages.h"
-#include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/render_thread_impl.h"
 #include "googleurl/src/url_util.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebKitPlatformSupport.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/base/clipboard/clipboard.h"
-#include "ui/base/ui_base_switches.h"
-#include "webkit/glue/scoped_clipboard_writer_glue.h"
 #include "webkit/glue/webkit_glue.h"
 #include "webkit/glue/websocketstreamhandle_bridge.h"
 
-// This definition of WriteBitmapFromPixels uses shared memory to communicate
-// across processes.
-void ScopedClipboardWriterGlue::WriteBitmapFromPixels(const void* pixels,
-                                                      const gfx::Size& size) {
-  // Do not try to write a bitmap more than once
-  if (shared_buf_)
-    return;
-
-  uint32 buf_size = 4 * size.width() * size.height();
-
-  // Allocate a shared memory buffer to hold the bitmap bits.
-  shared_buf_ = ChildThread::current()->AllocateSharedMemory(buf_size);
-  if (!shared_buf_)
-    return;
-
-  // Copy the bits into shared memory
-  DCHECK(shared_buf_->memory());
-  memcpy(shared_buf_->memory(), pixels, buf_size);
-  shared_buf_->Unmap();
-
-  ui::Clipboard::ObjectMapParam size_param;
-  const char* size_data = reinterpret_cast<const char*>(&size);
-  for (size_t i = 0; i < sizeof(gfx::Size); ++i)
-    size_param.push_back(size_data[i]);
-
-  ui::Clipboard::ObjectMapParams params;
-
-  // The first parameter is replaced on the receiving end with a pointer to
-  // a shared memory object containing the bitmap. We reserve space for it here.
-  ui::Clipboard::ObjectMapParam place_holder_param;
-  params.push_back(place_holder_param);
-  params.push_back(size_param);
-  objects_[ui::Clipboard::CBF_SMBITMAP] = params;
-}
-
-// Define a destructor that makes IPCs to flush the contents to the
-// system clipboard.
-ScopedClipboardWriterGlue::~ScopedClipboardWriterGlue() {
-  if (objects_.empty())
-    return;
-
-  if (shared_buf_) {
-    RenderThreadImpl::current()->Send(
-        new ClipboardHostMsg_WriteObjectsSync(objects_,
-                shared_buf_->handle()));
-    delete shared_buf_;
-    return;
-  }
-
-  RenderThreadImpl::current()->Send(
-      new ClipboardHostMsg_WriteObjectsAsync(objects_));
-}
-
 namespace webkit_glue {
 
-// Clipboard glue
-
-ui::Clipboard* ClipboardGetClipboard() {
-  return NULL;
-}
-
-uint64 ClipboardGetSequenceNumber(ui::Clipboard::Buffer buffer) {
-  uint64 sequence_number = 0;
-  RenderThreadImpl::current()->Send(
-      new ClipboardHostMsg_GetSequenceNumber(buffer,
-                                             &sequence_number));
-  return sequence_number;
-}
-
-bool ClipboardIsFormatAvailable(const ui::Clipboard::FormatType& format,
-                                ui::Clipboard::Buffer buffer) {
-  bool result;
-  RenderThreadImpl::current()->Send(
-      new ClipboardHostMsg_IsFormatAvailable(format, buffer, &result));
-  return result;
-}
-
-void ClipboardReadAvailableTypes(ui::Clipboard::Buffer buffer,
-                                 std::vector<string16>* types,
-                                 bool* contains_filenames) {
-  RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadAvailableTypes(
-      buffer, types, contains_filenames));
-}
-
-void ClipboardReadText(ui::Clipboard::Buffer buffer, string16* result) {
-  RenderThreadImpl::current()->Send(
-      new ClipboardHostMsg_ReadText(buffer, result));
-}
-
-void ClipboardReadAsciiText(ui::Clipboard::Buffer buffer, std::string* result) {
-  RenderThreadImpl::current()->Send(
-      new ClipboardHostMsg_ReadAsciiText(buffer, result));
-}
-
-void ClipboardReadHTML(ui::Clipboard::Buffer buffer, string16* markup,
-                       GURL* url, uint32* fragment_start,
-                       uint32* fragment_end) {
-  RenderThreadImpl::current()->Send(
-      new ClipboardHostMsg_ReadHTML(buffer, markup, url, fragment_start,
-                                    fragment_end));
-}
-
-void ClipboardReadImage(ui::Clipboard::Buffer buffer, std::string* data) {
-  base::SharedMemoryHandle image_handle;
-  uint32 image_size;
-  RenderThreadImpl::current()->Send(
-      new ClipboardHostMsg_ReadImage(buffer, &image_handle, &image_size));
-  if (base::SharedMemory::IsHandleValid(image_handle)) {
-    base::SharedMemory buffer(image_handle, true);
-    buffer.Map(image_size);
-    data->append(static_cast<char*>(buffer.memory()), image_size);
-  }
-}
-
 void GetPlugins(bool refresh,
                 std::vector<webkit::WebPluginInfo>* plugins) {
   if (!RenderThreadImpl::current()->plugin_refresh_allowed())
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.cc b/content/renderer/renderer_webkitplatformsupport_impl.cc
index dd427d0..bbb6033 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -24,6 +24,7 @@
 #include "content/renderer/media/audio_device.h"
 #include "content/renderer/media/audio_hardware.h"
 #include "content/renderer/render_thread_impl.h"
+#include "content/renderer/renderer_clipboard_client.h"
 #include "content/renderer/renderer_webaudiodevice_impl.h"
 #include "content/renderer/renderer_webidbfactory_impl.h"
 #include "content/renderer/renderer_webstoragenamespace_impl.h"
@@ -143,7 +144,8 @@ class RendererWebKitPlatformSupportImpl::SandboxSupport
 //------------------------------------------------------------------------------
 
 RendererWebKitPlatformSupportImpl::RendererWebKitPlatformSupportImpl()
-    : clipboard_(new webkit_glue::WebClipboardImpl),
+    : clipboard_client_(new RendererClipboardClient),
+      clipboard_(new webkit_glue::WebClipboardImpl(clipboard_client_.get())),
       mime_registry_(new RendererWebKitPlatformSupportImpl::MimeRegistry),
       sandbox_support_(new RendererWebKitPlatformSupportImpl::SandboxSupport),
       sudden_termination_disables_(0),
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.h b/content/renderer/renderer_webkitplatformsupport_impl.h
index 831ab58..c690aee 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.h
+++ b/content/renderer/renderer_webkitplatformsupport_impl.h
@@ -12,6 +12,7 @@
 #include "content/common/content_export.h"
 #include "webkit/glue/webkitplatformsupport_impl.h"
 
+class RendererClipboardClient;
 class WebSharedWorkerRepositoryImpl;
 class WebFileSystemImpl;
 
@@ -95,6 +96,7 @@ class CONTENT_EXPORT RendererWebKitPlatformSupportImpl
   // Helper function to send synchronous message from any thread.
   static bool SendSyncMessageFromAnyThread(IPC::SyncMessage* msg);
 
+  scoped_ptr<RendererClipboardClient> clipboard_client_;
   scoped_ptr<webkit_glue::WebClipboardImpl> clipboard_;
 
   class FileUtilities;
diff --git a/ui/base/clipboard/scoped_clipboard_writer.cc b/ui/base/clipboard/scoped_clipboard_writer.cc
index 42ca835..9014f3a 100644
--- a/ui/base/clipboard/scoped_clipboard_writer.cc
+++ b/ui/base/clipboard/scoped_clipboard_writer.cc
@@ -88,7 +88,7 @@ void ScopedClipboardWriter::WriteWebSmartPaste() {
 void ScopedClipboardWriter::WriteBitmapFromPixels(const void* pixels,
                                                   const gfx::Size& size) {
   Clipboard::ObjectMapParam pixels_parameter, size_parameter;
-  const char* pixels_data = reinterpret_cast<const char*>(pixels);
+  const char* pixels_data = static_cast<const char*>(pixels);
   size_t pixels_length = 4 * size.width() * size.height();
   for (size_t i = 0; i < pixels_length; i++)
     pixels_parameter.push_back(pixels_data[i]);
diff --git a/webkit/glue/clipboard_client.h b/webkit/glue/clipboard_client.h
new file mode 100644
index 0000000..92e8c88
--- /dev/null
+++ b/webkit/glue/clipboard_client.h
@@ -0,0 +1,68 @@
+// 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 WEBKIT_GLUE_CLIPBOARD_CLIENT_H_
+#define WEBKIT_GLUE_CLIPBOARD_CLIENT_H_
+
+#include "ui/base/clipboard/clipboard.h"
+
+class GURL;
+
+namespace webkit_glue {
+
+// Interface for the webkit glue embedder to implement to support clipboard.
+class ClipboardClient {
+ public:
+  class WriteContext {
+   public:
+    virtual ~WriteContext() { }
+
+    // Writes bitmap data into the context, updating the ObjectMap.
+    virtual void WriteBitmapFromPixels(ui::Clipboard::ObjectMap* objects,
+                                       const void* pixels,
+                                       const gfx::Size& size) = 0;
+
+    // Flushes all gathered data, and destroys the context.
+    virtual void FlushAndDestroy(const ui::Clipboard::ObjectMap& objects) = 0;
+  };
+
+  virtual ~ClipboardClient() { }
+
+  // Get a clipboard that can be used to construct a ScopedClipboardWriterGlue.
+  virtual ui::Clipboard* GetClipboard() = 0;
+
+  // Get a sequence number which uniquely identifies clipboard state.
+  virtual uint64 GetSequenceNumber(ui::Clipboard::Buffer buffer) = 0;
+
+  // Tests whether the clipboard contains a certain format
+  virtual bool IsFormatAvailable(const ui::Clipboard::FormatType& format,
+                                 ui::Clipboard::Buffer buffer) = 0;
+
+  // Reads the available types from the clipboard, if available.
+  virtual void ReadAvailableTypes(ui::Clipboard::Buffer buffer,
+                                  std::vector<string16>* types,
+                                  bool* contains_filenames) = 0;
+
+  // Reads UNICODE text from the clipboard, if available.
+  virtual void ReadText(ui::Clipboard::Buffer buffer, string16* result) = 0;
+
+  // Reads ASCII text from the clipboard, if available.
+  virtual void ReadAsciiText(ui::Clipboard::Buffer buffer,
+                             std::string* result) = 0;
+
+  // Reads HTML from the clipboard, if available.
+  virtual void ReadHTML(ui::Clipboard::Buffer buffer, string16* markup,
+                        GURL* url, uint32* fragment_start,
+                        uint32* fragment_end) = 0;
+
+  // Reads and image from the clipboard, if available.
+  virtual void ReadImage(ui::Clipboard::Buffer buffer, std::string* data) = 0;
+
+  // Creates a context to write clipboard data. May return NULL.
+  virtual WriteContext* CreateWriteContext() = 0;
+};
+
+}  // namespace webkit_glue
+
+#endif  // WEBKIT_GLUE_CLIPBOARD_CLIENT_H_
diff --git a/webkit/glue/scoped_clipboard_writer_glue.cc b/webkit/glue/scoped_clipboard_writer_glue.cc
new file mode 100644
index 0000000..be4ccac
--- /dev/null
+++ b/webkit/glue/scoped_clipboard_writer_glue.cc
@@ -0,0 +1,25 @@
+// 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 "webkit/glue/scoped_clipboard_writer_glue.h"
+
+ScopedClipboardWriterGlue::ScopedClipboardWriterGlue(
+    webkit_glue::ClipboardClient* client)
+    : ui::ScopedClipboardWriter(client->GetClipboard()),
+      context_(client->CreateWriteContext()) {
+}
+
+ScopedClipboardWriterGlue::~ScopedClipboardWriterGlue() {
+  if (context_)
+    context_->FlushAndDestroy(objects_);
+}
+
+void ScopedClipboardWriterGlue::WriteBitmapFromPixels(const void* pixels,
+                                                      const gfx::Size& size) {
+  if (context_) {
+    context_->WriteBitmapFromPixels(&objects_, pixels, size);
+  } else {
+    ScopedClipboardWriter::WriteBitmapFromPixels(pixels, size);
+  }
+}
diff --git a/webkit/glue/scoped_clipboard_writer_glue.h b/webkit/glue/scoped_clipboard_writer_glue.h
index 9b331fc..cee1669 100644
--- a/webkit/glue/scoped_clipboard_writer_glue.h
+++ b/webkit/glue/scoped_clipboard_writer_glue.h
@@ -6,24 +6,18 @@
 #define WEBKIT_GLUE_SCOPED_CLIPBOARD_WRITER_GLUE_H_
 
 #include "ui/base/clipboard/scoped_clipboard_writer.h"
-
-namespace base {
-class SharedMemory;
-}
+#include "webkit/glue/clipboard_client.h"
 
 class ScopedClipboardWriterGlue : public ui::ScopedClipboardWriter {
  public:
-  explicit ScopedClipboardWriterGlue(ui::Clipboard* clipboard)
-      : ui::ScopedClipboardWriter(clipboard),
-        shared_buf_(NULL) {
-  }
+  explicit ScopedClipboardWriterGlue(webkit_glue::ClipboardClient* client);
 
   ~ScopedClipboardWriterGlue();
 
   void WriteBitmapFromPixels(const void* pixels, const gfx::Size& size);
 
  private:
-  base::SharedMemory* shared_buf_;
+  webkit_glue::ClipboardClient::WriteContext* context_;
   DISALLOW_COPY_AND_ASSIGN(ScopedClipboardWriterGlue);
 };
 
diff --git a/webkit/glue/webclipboard_impl.cc b/webkit/glue/webclipboard_impl.cc
index 80b2ae9..42b76cf 100644
--- a/webkit/glue/webclipboard_impl.cc
+++ b/webkit/glue/webclipboard_impl.cc
@@ -62,6 +62,10 @@ std::string WebClipboardImpl::URLToImageMarkup(const WebURL& url,
   return markup;
 }
 
+WebClipboardImpl::WebClipboardImpl(ClipboardClient* client)
+    : client_(client) {
+}
+
 WebClipboardImpl::~WebClipboardImpl() {
 }
 
@@ -74,7 +78,7 @@ uint64 WebClipboardImpl::sequenceNumber(Buffer buffer) {
   if (!ConvertBufferType(buffer, &buffer_type))
     return 0;
 
-  return ClipboardGetSequenceNumber(buffer_type);
+  return client_->GetSequenceNumber(buffer_type);
 }
 
 bool WebClipboardImpl::isFormatAvailable(Format format, Buffer buffer) {
@@ -86,9 +90,9 @@ bool WebClipboardImpl::isFormatAvailable(Format format, Buffer buffer) {
 
   switch (format) {
     case FormatPlainText:
-      return ClipboardIsFormatAvailable(ui::Clipboard::GetPlainTextFormatType(),
+      return client_->IsFormatAvailable(ui::Clipboard::GetPlainTextFormatType(),
                                         buffer_type) ||
-          ClipboardIsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(),
+          client_->IsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(),
                                      buffer_type);
     case FormatHTML:
       format_type = ui::Clipboard::GetHtmlFormatType();
@@ -106,7 +110,7 @@ bool WebClipboardImpl::isFormatAvailable(Format format, Buffer buffer) {
       return false;
   }
 
-  return ClipboardIsFormatAvailable(format_type, buffer_type);
+  return client_->IsFormatAvailable(format_type, buffer_type);
 }
 
 WebVector<WebString> WebClipboardImpl::readAvailableTypes(
@@ -114,7 +118,7 @@ WebVector<WebString> WebClipboardImpl::readAvailableTypes(
   ui::Clipboard::Buffer buffer_type;
   std::vector<string16> types;
   if (ConvertBufferType(buffer, &buffer_type)) {
-    ClipboardReadAvailableTypes(buffer_type, &types, contains_filenames);
+    client_->ReadAvailableTypes(buffer_type, &types, contains_filenames);
   }
   return types;
 }
@@ -124,18 +128,18 @@ WebString WebClipboardImpl::readPlainText(Buffer buffer) {
   if (!ConvertBufferType(buffer, &buffer_type))
     return WebString();
 
-  if (ClipboardIsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(),
+  if (client_->IsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(),
                                  buffer_type)) {
     string16 text;
-    ClipboardReadText(buffer_type, &text);
+    client_->ReadText(buffer_type, &text);
     if (!text.empty())
       return text;
   }
 
-  if (ClipboardIsFormatAvailable(ui::Clipboard::GetPlainTextFormatType(),
+  if (client_->IsFormatAvailable(ui::Clipboard::GetPlainTextFormatType(),
                                  buffer_type)) {
     std::string text;
-    ClipboardReadAsciiText(buffer_type, &text);
+    client_->ReadAsciiText(buffer_type, &text);
     if (!text.empty())
       return ASCIIToUTF16(text);
   }
@@ -152,7 +156,7 @@ WebString WebClipboardImpl::readHTML(Buffer buffer, WebURL* source_url,
 
   string16 html_stdstr;
   GURL gurl;
-  ClipboardReadHTML(buffer_type, &html_stdstr, &gurl,
+  client_->ReadHTML(buffer_type, &html_stdstr, &gurl,
                     static_cast<uint32*>(fragment_start),
                     static_cast<uint32*>(fragment_end));
   *source_url = gurl;
@@ -165,14 +169,14 @@ WebData WebClipboardImpl::readImage(Buffer buffer) {
     return WebData();
 
   std::string png_data;
-  ClipboardReadImage(buffer_type, &png_data);
+  client_->ReadImage(buffer_type, &png_data);
   return WebData(png_data);
 }
 
 void WebClipboardImpl::writeHTML(
     const WebString& html_text, const WebURL& source_url,
     const WebString& plain_text, bool write_smart_paste) {
-  ScopedClipboardWriterGlue scw(ClipboardGetClipboard());
+  ScopedClipboardWriterGlue scw(client_);
   scw.WriteHTML(html_text, source_url.spec());
   scw.WriteText(plain_text);
 
@@ -181,12 +185,12 @@ void WebClipboardImpl::writeHTML(
 }
 
 void WebClipboardImpl::writePlainText(const WebString& plain_text) {
-  ScopedClipboardWriterGlue scw(ClipboardGetClipboard());
+  ScopedClipboardWriterGlue scw(client_);
   scw.WriteText(plain_text);
 }
 
 void WebClipboardImpl::writeURL(const WebURL& url, const WebString& title) {
-  ScopedClipboardWriterGlue scw(ClipboardGetClipboard());
+  ScopedClipboardWriterGlue scw(client_);
 
   scw.WriteBookmark(title, url.spec());
   scw.WriteHTML(UTF8ToUTF16(URLToMarkup(url, title)), "");
@@ -195,7 +199,7 @@ void WebClipboardImpl::writeURL(const WebURL& url, const WebString& title) {
 
 void WebClipboardImpl::writeImage(
     const WebImage& image, const WebURL& url, const WebString& title) {
-  ScopedClipboardWriterGlue scw(ClipboardGetClipboard());
+  ScopedClipboardWriterGlue scw(client_);
 
   if (!image.isNull()) {
 #if WEBKIT_USING_SKIA
@@ -226,7 +230,7 @@ void WebClipboardImpl::writeDataObject(const WebDragData& data) {
   // TODO(dcheng): This actually results in a double clear of the clipboard.
   // Once in WebKit, and once here when the clipboard writer goes out of scope.
   // The same is true of the other WebClipboard::write* methods.
-  ScopedClipboardWriterGlue scw(ClipboardGetClipboard());
+  ScopedClipboardWriterGlue scw(client_);
 
   // TODO(dcheng): Properly support text/uri-list here.
   scw.WriteText(data.plainText());
diff --git a/webkit/glue/webclipboard_impl.h b/webkit/glue/webclipboard_impl.h
index b4ac1e4..c1514f2 100644
--- a/webkit/glue/webclipboard_impl.h
+++ b/webkit/glue/webclipboard_impl.h
@@ -11,6 +11,7 @@
 #include <string>
 
 namespace webkit_glue {
+class ClipboardClient;
 
 class WebClipboardImpl : public WebKit::WebClipboard {
  public:
@@ -19,6 +20,8 @@ class WebClipboardImpl : public WebKit::WebClipboard {
   static std::string URLToImageMarkup(const WebKit::WebURL& url,
       const WebKit::WebString& title);
 
+  explicit WebClipboardImpl(ClipboardClient* client);
+
   virtual ~WebClipboardImpl();
 
   // WebClipboard methods:
@@ -51,6 +54,7 @@ class WebClipboardImpl : public WebKit::WebClipboard {
 
  private:
   bool ConvertBufferType(Buffer, ui::Clipboard::Buffer*);
+  ClipboardClient* client_;
 };
 
 }  // namespace webkit_glue
diff --git a/webkit/glue/webkit_glue.gypi b/webkit/glue/webkit_glue.gypi
index 95a7f84..1c6a8c2 100644
--- a/webkit/glue/webkit_glue.gypi
+++ b/webkit/glue/webkit_glue.gypi
@@ -373,6 +373,7 @@
         'resource_loader_bridge.h',
         'resource_type.cc',
         'resource_type.h',
+        'scoped_clipboard_writer_glue.cc',
         'scoped_clipboard_writer_glue.h',
         'simple_webmimeregistry_impl.cc',
         'simple_webmimeregistry_impl.h',
diff --git a/webkit/glue/webkit_glue.h b/webkit/glue/webkit_glue.h
index 53d6d9c..ddbc3a3 100644
--- a/webkit/glue/webkit_glue.h
+++ b/webkit/glue/webkit_glue.h
@@ -19,7 +19,6 @@
 #include "base/string16.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCanvas.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFileError.h"
-#include "ui/base/clipboard/clipboard.h"
 
 class GURL;
 class SkBitmap;
@@ -167,47 +166,10 @@ string16 GetLocalizedString(int message_id);
 // specified as BINDATA in the relevant .rc file.
 base::StringPiece GetDataResource(int resource_id);
 
-// Glue to access the clipboard.
-
-// Get a clipboard that can be used to construct a ScopedClipboardWriterGlue.
-ui::Clipboard* ClipboardGetClipboard();
-
-// Get a sequence number which uniquely identifies clipboard state.
-uint64 ClipboardGetSequenceNumber(ui::Clipboard::Buffer buffer);
-
-// Tests whether the clipboard contains a certain format
-bool ClipboardIsFormatAvailable(const ui::Clipboard::FormatType& format,
-                                ui::Clipboard::Buffer buffer);
-
-// Reads the available types from the clipboard, if available.
-void ClipboardReadAvailableTypes(ui::Clipboard::Buffer buffer,
-                                 std::vector<string16>* types,
-                                 bool* contains_filenames);
-
-// Reads UNICODE text from the clipboard, if available.
-void ClipboardReadText(ui::Clipboard::Buffer buffer, string16* result);
-
-// Reads ASCII text from the clipboard, if available.
-void ClipboardReadAsciiText(ui::Clipboard::Buffer buffer, std::string* result);
-
-// Reads HTML from the clipboard, if available.
-void ClipboardReadHTML(ui::Clipboard::Buffer buffer, string16* markup,
-                       GURL* url, uint32* fragment_start,
-                       uint32* fragment_end);
-
-void ClipboardReadImage(ui::Clipboard::Buffer buffer, std::string* data);
-
 // Embedders implement this function to return the list of plugins to Webkit.
 void GetPlugins(bool refresh,
                 std::vector<webkit::WebPluginInfo>* plugins);
 
-// Returns the locale that this instance of webkit is running as.  This is of
-// the form language-country (e.g., en-US or pt-BR).
-std::string GetWebKitLocale();
-
-// Returns true if the embedder is running in single process mode.
-bool IsSingleProcess();
-
 // ---- END FUNCTIONS IMPLEMENTED BY EMBEDDER ---------------------------------
 
 
diff --git a/webkit/tools/test_shell/simple_clipboard_impl.cc b/webkit/tools/test_shell/simple_clipboard_impl.cc
index 2b4219f..0b137f1c 100644
--- a/webkit/tools/test_shell/simple_clipboard_impl.cc
+++ b/webkit/tools/test_shell/simple_clipboard_impl.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "webkit/glue/webkit_glue.h"
+#include "webkit/tools/test_shell/simple_clipboard_impl.h"
 
 #include <string>
 
@@ -15,62 +15,66 @@
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/size.h"
-#include "webkit/glue/scoped_clipboard_writer_glue.h"
+#include "webkit/glue/webkit_glue.h"
 
-// Clipboard glue
+namespace {
 
-void ScopedClipboardWriterGlue::WriteBitmapFromPixels(
-    const void* pixels, const gfx::Size& size) {
-  ScopedClipboardWriter::WriteBitmapFromPixels(pixels, size);
-}
+base::LazyInstance<ui::Clipboard> clipboard = LAZY_INSTANCE_INITIALIZER;
+
+}  // anonymous namespace
 
-ScopedClipboardWriterGlue::~ScopedClipboardWriterGlue() {
+SimpleClipboardClient::SimpleClipboardClient() {
 }
 
-namespace webkit_glue {
+SimpleClipboardClient::~SimpleClipboardClient() {
+}
 
-base::LazyInstance<ui::Clipboard> clipboard = LAZY_INSTANCE_INITIALIZER;
 
-ui::Clipboard* ClipboardGetClipboard() {
+ui::Clipboard* SimpleClipboardClient::GetClipboard() {
   return clipboard.Pointer();
 }
 
-uint64 ClipboardGetSequenceNumber(ui::Clipboard::Buffer buffer) {
-  return ClipboardGetClipboard()->GetSequenceNumber(buffer);
+uint64 SimpleClipboardClient::GetSequenceNumber(ui::Clipboard::Buffer buffer) {
+  return GetClipboard()->GetSequenceNumber(buffer);
 }
 
-bool ClipboardIsFormatAvailable(const ui::Clipboard::FormatType& format,
-                                ui::Clipboard::Buffer buffer) {
-  return ClipboardGetClipboard()->IsFormatAvailable(format, buffer);
+bool SimpleClipboardClient::IsFormatAvailable(
+    const ui::Clipboard::FormatType& format,
+    ui::Clipboard::Buffer buffer) {
+  return GetClipboard()->IsFormatAvailable(format, buffer);
 }
 
-void ClipboardReadAvailableTypes(ui::Clipboard::Buffer buffer,
-                                 std::vector<string16>* types,
-                                 bool* contains_filenames) {
-  return ClipboardGetClipboard()->ReadAvailableTypes(buffer, types,
+void SimpleClipboardClient::ReadAvailableTypes(ui::Clipboard::Buffer buffer,
+                                               std::vector<string16>* types,
+                                               bool* contains_filenames) {
+  return GetClipboard()->ReadAvailableTypes(buffer, types,
                                                      contains_filenames);
 }
 
-void ClipboardReadText(ui::Clipboard::Buffer buffer, string16* result) {
-  ClipboardGetClipboard()->ReadText(buffer, result);
+void SimpleClipboardClient::ReadText(ui::Clipboard::Buffer buffer,
+                                     string16* result) {
+  GetClipboard()->ReadText(buffer, result);
 }
 
-void ClipboardReadAsciiText(ui::Clipboard::Buffer buffer, std::string* result) {
-  ClipboardGetClipboard()->ReadAsciiText(buffer, result);
+void SimpleClipboardClient::ReadAsciiText(ui::Clipboard::Buffer buffer,
+                                          std::string* result) {
+  GetClipboard()->ReadAsciiText(buffer, result);
 }
 
-void ClipboardReadHTML(ui::Clipboard::Buffer buffer, string16* markup,
-                       GURL* url, uint32* fragment_start,
-                       uint32* fragment_end) {
+void SimpleClipboardClient::ReadHTML(ui::Clipboard::Buffer buffer,
+                                     string16* markup,
+                                     GURL* url, uint32* fragment_start,
+                                     uint32* fragment_end) {
   std::string url_str;
-  ClipboardGetClipboard()->ReadHTML(buffer, markup, url ? &url_str : NULL,
-                                    fragment_start, fragment_end);
+  GetClipboard()->ReadHTML(buffer, markup, url ? &url_str : NULL,
+                           fragment_start, fragment_end);
   if (url)
     *url = GURL(url_str);
 }
 
-void ClipboardReadImage(ui::Clipboard::Buffer buffer, std::string* data) {
-  SkBitmap bitmap = ClipboardGetClipboard()->ReadImage(buffer);
+void SimpleClipboardClient::ReadImage(ui::Clipboard::Buffer buffer,
+                                      std::string* data) {
+  SkBitmap bitmap = GetClipboard()->ReadImage(buffer);
   if (bitmap.isNull())
     return;
 
@@ -90,4 +94,8 @@ void ClipboardReadImage(ui::Clipboard::Buffer buffer, std::string* data) {
   }
 }
 
-}  // namespace webkit_glue
+webkit_glue::ClipboardClient::WriteContext*
+SimpleClipboardClient::CreateWriteContext() {
+  return NULL;
+}
+
diff --git a/webkit/tools/test_shell/simple_clipboard_impl.h b/webkit/tools/test_shell/simple_clipboard_impl.h
new file mode 100644
index 0000000..306e3d0
--- /dev/null
+++ b/webkit/tools/test_shell/simple_clipboard_impl.h
@@ -0,0 +1,32 @@
+// 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 WEBKIT_TOOLS_TEST_SHELL_SIMPLE_CLIPBOARD_IMPL_H_
+#define WEBKIT_TOOLS_TEST_SHELL_SIMPLE_CLIPBOARD_IMPL_H_
+
+#include "webkit/glue/clipboard_client.h"
+
+class SimpleClipboardClient : public webkit_glue::ClipboardClient {
+ public:
+  SimpleClipboardClient();
+  virtual ~SimpleClipboardClient();
+
+  virtual ui::Clipboard* GetClipboard();
+  virtual uint64 GetSequenceNumber(ui::Clipboard::Buffer buffer);
+  virtual bool IsFormatAvailable(const ui::Clipboard::FormatType& format,
+                                 ui::Clipboard::Buffer buffer);
+  virtual void ReadAvailableTypes(ui::Clipboard::Buffer buffer,
+                                  std::vector<string16>* types,
+                                  bool* contains_filenames);
+  virtual void ReadText(ui::Clipboard::Buffer buffer, string16* result);
+  virtual void ReadAsciiText(ui::Clipboard::Buffer buffer,
+                             std::string* result);
+  virtual void ReadHTML(ui::Clipboard::Buffer buffer, string16* markup,
+                        GURL* url, uint32* fragment_start,
+                        uint32* fragment_end);
+  virtual void ReadImage(ui::Clipboard::Buffer buffer, std::string* data);
+  virtual WriteContext* CreateWriteContext();
+};
+
+#endif  // WEBKIT_TOOLS_TEST_SHELL_SIMPLE_CLIPBOARD_IMPL_H_
diff --git a/webkit/tools/test_shell/test_shell_webkit_init.cc b/webkit/tools/test_shell/test_shell_webkit_init.cc
index 3c28089..ca945d5 100644
--- a/webkit/tools/test_shell/test_shell_webkit_init.cc
+++ b/webkit/tools/test_shell/test_shell_webkit_init.cc
@@ -21,7 +21,8 @@
 #include "webkit/tools/test_shell/test_shell_webthemeengine.h"
 #endif
 
-TestShellWebKitInit::TestShellWebKitInit(bool layout_test_mode) {
+TestShellWebKitInit::TestShellWebKitInit(bool layout_test_mode)
+    : real_clipboard_(&clipboard_client_) {
   v8::V8::SetCounterFunction(base::StatsTable::FindLocation);
 
   WebKit::initialize(this);
diff --git a/webkit/tools/test_shell/test_shell_webkit_init.h b/webkit/tools/test_shell/test_shell_webkit_init.h
index 2cf1209..4063b94 100644
--- a/webkit/tools/test_shell/test_shell_webkit_init.h
+++ b/webkit/tools/test_shell/test_shell_webkit_init.h
@@ -19,6 +19,7 @@
 #include "webkit/support/simple_database_system.h"
 #include "webkit/tools/test_shell/mock_webclipboard_impl.h"
 #include "webkit/tools/test_shell/simple_appcache_system.h"
+#include "webkit/tools/test_shell/simple_clipboard_impl.h"
 #include "webkit/tools/test_shell/simple_file_system.h"
 #include "webkit/tools/test_shell/simple_resource_loader_bridge.h"
 #include "webkit/tools/test_shell/simple_webcookiejar_impl.h"
@@ -107,6 +108,7 @@ class TestShellWebKitInit : public webkit_glue::WebKitPlatformSupportImpl {
  private:
   scoped_ptr<webkit_glue::SimpleWebMimeRegistryImpl> mime_registry_;
   MockWebClipboardImpl mock_clipboard_;
+  SimpleClipboardClient clipboard_client_;
   webkit_glue::WebClipboardImpl real_clipboard_;
   webkit_glue::WebFileUtilitiesImpl file_utilities_;
   ScopedTempDir appcache_dir_;