Change FrameTreeNode id from int64 to int.

content/browser/frame_host/navigation_entry_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/navigation_entry_impl.h"
 
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/common/navigation_params.h"
@@ skipping 443 matching lines @@
   set_should_clear_history_list(false);
   set_frame_tree_node_id(-1);
 
 #if defined(OS_ANDROID)
   // Reset the time stamp so that the metrics are not reported if this entry is
   // loaded again in the future.
   set_intent_received_timestamp(base::TimeTicks());
 #endif
 }
 
-void NavigationEntryImpl::AddOrUpdateFrameEntry(int64 frame_tree_node_id,
+void NavigationEntryImpl::AddOrUpdateFrameEntry(int frame_tree_node_id,
                                                 SiteInstanceImpl* site_instance,
                                                 const GURL& url,
                                                 const Referrer& referrer) {
   // TODO(creis): Walk tree to find the node to update.
   // TODO(creis): Only create a new entry if one doesn't exist yet.
   FrameNavigationEntry* frame_entry =
       new FrameNavigationEntry(site_instance, url, referrer);
   root_node()->children.push_back(
       new NavigationEntryImpl::TreeNode(frame_entry));
 }
 
 void NavigationEntryImpl::SetScreenshotPNGData(
     scoped_refptr<base::RefCountedBytes> png_data) {
   screenshot_ = png_data;
   if (screenshot_.get())
     UMA_HISTOGRAM_MEMORY_KB("Overscroll.ScreenshotSize", screenshot_->size());
 }
 
 GURL NavigationEntryImpl::GetHistoryURLForDataURL() const {
   return GetBaseURLForDataURL().is_empty() ? GURL() : GetVirtualURL();
 }
 
 }  // namespace content