Remove the extra copy of page id.

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 377 matching lines @@
     IPC_MESSAGE_HANDLER(FrameHostMsg_VisualStateResponse,
                         OnVisualStateResponse)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_RunJavaScriptMessage,
                                     OnRunJavaScriptMessage)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_RunBeforeUnloadConfirm,
                                     OnRunBeforeUnloadConfirm)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidAccessInitialDocument,
                         OnDidAccessInitialDocument)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidDisownOpener, OnDidDisownOpener)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeName, OnDidChangeName)
-    IPC_MESSAGE_HANDLER(FrameHostMsg_DidAssignPageId, OnDidAssignPageId)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeSandboxFlags,
                         OnDidChangeSandboxFlags)
     IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateTitle, OnUpdateTitle)
     IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateEncoding, OnUpdateEncoding)
     IPC_MESSAGE_HANDLER(FrameHostMsg_BeginNavigation,
                         OnBeginNavigation)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DispatchLoad, OnDispatchLoad)
     IPC_MESSAGE_HANDLER(FrameHostMsg_TextSurroundingSelectionResponse,
                         OnTextSurroundingSelectionResponse)
     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_Events, OnAccessibilityEvents)
@@ skipping 829 matching lines @@
   // This message is only sent for top-level frames. TODO(avi): when frame tree
   // mirroring works correctly, add a check here to enforce it.
   delegate_->DidDisownOpener(this);
 }
 
 void RenderFrameHostImpl::OnDidChangeName(const std::string& name) {
   frame_tree_node()->SetFrameName(name);
   delegate_->DidChangeName(this, name);
 }
 
-void RenderFrameHostImpl::OnDidAssignPageId(int32 page_id) {
-  // Update the RVH's current page ID so that future IPCs from the renderer
-  // correspond to the new page.
-  render_view_host_->page_id_ = page_id;
-}
-
 void RenderFrameHostImpl::OnDidChangeSandboxFlags(int32 frame_routing_id,
                                                   SandboxFlags flags) {
   FrameTree* frame_tree = frame_tree_node()->frame_tree();
   FrameTreeNode* child =
       frame_tree->FindByRoutingID(GetProcess()->GetID(), frame_routing_id);
   if (!child)
     return;
 
   // Ensure that a frame can only update sandbox flags for its immediate
   // children.  If this is not the case, the renderer is considered malicious
@@ skipping 828 matching lines @@
   // We may be returning to an existing NavigationEntry that had been granted
   // file access.  If this is a different process, we will need to grant the
   // access again.  The files listed in the page state are validated when they
   // are received from the renderer to prevent abuse.
   if (request_params.page_state.IsValid()) {
     render_view_host_->GrantFileAccessFromPageState(request_params.page_state);
   }
 }
 
 }  // namespace content