Move existing kSitePerProcess checks to a policy-oracle object

content/browser/frame_host/frame_tree.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.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/callback.h"
-#include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/render_frame_host_factory.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/frame_host/render_frame_proxy_host.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
-#include "content/public/common/content_switches.h"
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
 
 namespace content {
 
 namespace {
 
 // Used with FrameTree::ForEach() to search for the FrameTreeNode
 // corresponding to |frame_tree_node_id| within a specific FrameTree.
 bool FrameTreeNodeForId(int frame_tree_node_id,
                         FrameTreeNode** out_node,
@@ skipping 365 matching lines @@
   load_progress_ = 0.0;
 }
 
 bool FrameTree::IsLoading() {
   bool is_loading = false;
   ForEach(base::Bind(&IsNodeLoading, &is_loading));
   return is_loading;
 }
 
 }  // namespace content