remove main_render_frame(), use GetMainRenderFrame() instead

content/renderer/history_controller.cc

 // Copyright 2014 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.
 
 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  *     (http://www.torchmobile.com/)
  *
@@ skipping 42 matching lines @@
 HistoryController::~HistoryController() {
 }
 
 void HistoryController::GoToEntry(scoped_ptr<HistoryEntry> target_entry,
                                   WebURLRequest::CachePolicy cache_policy) {
   HistoryFrameLoadVector same_document_loads;
   HistoryFrameLoadVector different_document_loads;
 
   provisional_entry_ = target_entry.Pass();
 
-  WebFrame* main_frame = render_view_->main_render_frame()->GetWebFrame();
+  WebFrame* main_frame = render_view_->GetMainRenderFrame()->GetWebFrame();
   if (current_entry_) {
     RecursiveGoToEntry(
         main_frame, same_document_loads, different_document_loads);
   }
 
   if (same_document_loads.empty() && different_document_loads.empty()) {
     // If we don't have any frames to navigate at this point, either
     // (1) there is no previous history entry to compare against, or
     // (2) we were unable to match any frames by name. In the first case,
     // doing a different document navigation to the root item is the only valid
@@ skipping 112 matching lines @@
   if (!current_entry_) {
     current_entry_.reset(
         new HistoryEntry(new_item, target_frame->GetRoutingID()));
   } else {
     current_entry_.reset(current_entry_->CloneAndReplace(
         new_item, clone_children_of_target, target_frame, render_view_));
   }
 }
 
 }  // namespace content