Remove unused fields from //content.

content/browser/frame_host/frame_tree_node.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/frame_tree_node.h"
 
 #include <queue>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 57 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   FrameTreeNodeIdMap* nodes = g_frame_tree_node_id_map.Pointer();
   FrameTreeNodeIdMap::iterator it = nodes->find(frame_tree_node_id);
   return it == nodes->end() ? nullptr : it->second;
 }
 
 FrameTreeNode::FrameTreeNode(
     FrameTree* frame_tree,
     Navigator* navigator,
     RenderFrameHostDelegate* render_frame_delegate,
-    RenderViewHostDelegate* render_view_delegate,
     RenderWidgetHostDelegate* render_widget_delegate,
     RenderFrameHostManager::Delegate* manager_delegate,
     blink::WebTreeScopeType scope,
     const std::string& name,
     const std::string& unique_name,
     const blink::WebFrameOwnerProperties& frame_owner_properties)
     : frame_tree_(frame_tree),
       navigator_(navigator),
       render_manager_(this,
                       render_frame_delegate,
-                      render_view_delegate,
                       render_widget_delegate,
                       manager_delegate),
       frame_tree_node_id_(next_frame_tree_node_id_++),
       parent_(NULL),
       opener_(nullptr),
       opener_observer_(nullptr),
       has_committed_real_load_(false),
       replication_state_(
           scope,
           name,
@@ skipping 383 matching lines @@
 void FrameTreeNode::TraceSnapshot() const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(
       "navigation", "FrameTreeNode",
       TRACE_ID_WITH_SCOPE("FrameTreeNode", frame_tree_node_id_),
       std::unique_ptr<base::trace_event::ConvertableToTraceFormat>(
           new TracedFrameTreeNode(*this)));
 }
 
 }  // namespace content