Update a webview plugin's WebView's lifecycle immediately after resizing.

components/plugins/renderer/loadable_plugin_placeholder.h

 // Copyright 2015 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.
 
 #ifndef COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
 #define COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
@@ skipping 105 matching lines @@
   content::PluginInstanceThrottler* premade_throttler_;
 
   bool allow_loading_;
 
   bool finished_loading_;
   std::string identifier_;
 
   // Used to prevent re-entrancy during the size recheck for throttled plugins.
   bool in_size_recheck_;
   gfx::Rect unobscured_rect_;
-  base::OneShotTimer size_update_timer_;

[tommycli, 2016/03/04 18:32:09]

LoadablePluginPlaceholder should have this patch reapplied:

https://codereview.chromium.org/1491893004/

It basically does the same thing as your modifications, but adds a few more
changes.

 
   // True if the power saver heuristic has already been run on this content.
   bool heuristic_run_before_;
 
   base::WeakPtrFactory<LoadablePluginPlaceholder> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LoadablePluginPlaceholder);
 };
 
 }  // namespace plugins
 
 #endif  // COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_