Add IPCs to check web copy/cut/paste for extensions with the appropriate permission bit.

chrome/browser/extensions/extension_host.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/extensions/extension_host.h"
 
 #include <list>
 
 #include "base/message_loop.h"
 #include "base/singleton.h"
@@ skipping 497 matching lines @@
     webkit_prefs.allow_scripts_to_close_windows = true;
 
   // Disable anything that requires the GPU process for background pages.
   // See http://crbug.com/64512 and http://crbug.com/64841.
   if (extension_host_type_ == ViewType::EXTENSION_BACKGROUND_PAGE) {
     webkit_prefs.experimental_webgl_enabled = false;
     webkit_prefs.accelerated_compositing_enabled = false;
     webkit_prefs.accelerated_2d_canvas_enabled = false;
   }
 
-  // TODO(dcheng): incorporate this setting into kClipboardPermission check.
-  webkit_prefs.javascript_can_access_clipboard = true;
-
-  // TODO(dcheng): check kClipboardPermission instead once it's implemented.
-  if (extension_->HasApiPermission(Extension::kExperimentalPermission))
-    webkit_prefs.dom_paste_enabled = true;
   return webkit_prefs;
 }
 
 void ExtensionHost::ProcessWebUIMessage(
     const ViewHostMsg_DomMessage_Params& params) {
   if (extension_function_dispatcher_.get()) {
     extension_function_dispatcher_->HandleRequest(params);
   }
 }
 
@@ skipping 129 matching lines @@
 #if defined(OS_MACOSX)
   PopupMenuHelper popup_menu_helper(render_view_host());
   popup_menu_helper.ShowPopupMenu(bounds, item_height, item_font_size,
                                   selected_item, items, right_aligned);
 #else
   // Only on Mac are select popup menus external.
   NOTREACHED();
 #endif
 }
 
+bool ExtensionHost::IsCopyCutEnabled() {
+  // For backwards compatibility, extensions can always copy/cut items into the
+  // clipboard.
+  return true;
+}
+
+bool ExtensionHost::IsPasteEnabled() {
+  return extension_->HasApiPermission(Extension::kClipboardPermission);

[rniwa-cr, 2011/02/16 03:41:50]

Is extension_ origin controlled?  i.e. only script context that comes from the
extension's origin can access this function.

+}
+
 void ExtensionHost::StartDragging(const WebDropData& drop_data,
     WebDragOperationsMask operation_mask,
     const SkBitmap& image,
     const gfx::Point& image_offset) {
   // We're not going to do any drag & drop, but we have to tell the renderer the
   // drag & drop ended, othewise the renderer thinks the drag operation is
   // underway and mouse events won't work.  See bug 34061.
   // TODO(twiz) Implement drag & drop support for ExtensionHost instances.
   // See feature issue 36288.
   render_view_host()->DragSourceSystemDragEnded();
@@ skipping 130 matching lines @@
   }
   return window_id;
 }
 
 void ExtensionHost::OnRunFileChooser(
     const ViewHostMsg_RunFileChooser_Params& params) {
   if (file_select_helper_.get() == NULL)
     file_select_helper_.reset(new FileSelectHelper(profile()));
   file_select_helper_->RunFileChooser(render_view_host_, params);
 }