Add an ability to call WebKit's WebFrame::loadData via NavigationController.

content/common/view_messages.h

 // 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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "content/common/content_export.h"
@@ skipping 600 matching lines @@
   IPC_STRUCT_MEMBER(int, pending_history_list_offset)
 
   // Informs the RenderView of where its current page contents reside in
   // session history and the total size of the session history list.
   IPC_STRUCT_MEMBER(int, current_history_list_offset)
   IPC_STRUCT_MEMBER(int, current_history_list_length)
 
   // The URL to load.
   IPC_STRUCT_MEMBER(GURL, url)
 
+  // Base URL for using in WebKit's SubstituteData.
+  // Is only used with data: URLs.
+  IPC_STRUCT_MEMBER(GURL, base_url_for_data)
+
+  // History URL for using in WebKit's SubstituteData.
+  // Is only used with data: URLs.
+  IPC_STRUCT_MEMBER(GURL, history_url_for_data)
+
   // The URL to send in the "Referer" header field. Can be empty if there is
   // no referrer.
   IPC_STRUCT_MEMBER(content::Referrer, referrer)
 
   // The type of transition.
   IPC_STRUCT_MEMBER(content::PageTransition, transition)
 
   // Opaque history state (received by ViewHostMsg_UpdateState).
   IPC_STRUCT_MEMBER(std::string, state)
 
@@ skipping 1477 matching lines @@
 // (according to the value of is_hung). The browser can give the user the
 // option of killing the plugin.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_PepperPluginHung,
                     int /* plugin_child_id */,
                     FilePath /* path */,
                     bool /* is_hung */)
 
 // Screen was rotated. Dispatched to the onorientationchange javascript API.
 IPC_MESSAGE_ROUTED1(ViewMsg_OrientationChangeEvent,
                     int /* orientation */)