Only notify V8 once per timezone change

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 574 matching lines @@
     // If this is an attempt to reload while we are swapped out, we should not
     // reload swappedout://, but the previous page, which is stored in
     // params.state.  Setting is_reload to false will treat this like a back
     // navigation to accomplish that.
     is_reload = false;
     cache_policy = WebURLRequest::ReloadIgnoringCacheData;
 
     // We refresh timezone when a view is swapped in since timezone
     // can get out of sync when the system timezone is updated while
     // the view is swapped out.
-    RenderViewImpl::NotifyTimezoneChange(render_view_->webview()->mainFrame());
+    RenderViewImpl::NotifyTimezoneChange();
 
     render_view_->SetSwappedOut(false);
     is_swapped_out_ = false;
   }
 
   if (params.should_clear_history_list) {
     CHECK_EQ(params.pending_history_list_offset, -1);
     CHECK_EQ(params.current_history_list_offset, -1);
     CHECK_EQ(params.current_history_list_length, 0);
   }
@@ skipping 2059 matching lines @@
       policy == blink::WebNavigationPolicyNewForegroundTab ||
       policy == blink::WebNavigationPolicyNewWindow ||
       policy == blink::WebNavigationPolicyNewPopup) {
     WebUserGestureIndicator::consumeUserGesture();
   }
 
   Send(new FrameHostMsg_OpenURL(routing_id_, params));
 }
 
 }  // namespace content