Reland: Plugin Power Saver: Improve Poster behavior for essential plugins.

content/renderer/pepper/plugin_power_saver_helper.h

 // Copyright 2014 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 CONTENT_RENDERER_PEPPER_PLUGIN_POWER_SAVER_HELPER_H_
 #define CONTENT_RENDERER_PEPPER_PLUGIN_POWER_SAVER_HELPER_H_
 
 #include <set>
 #include <vector>
 
 #include "base/callback.h"
 #include "content/common/content_export.h"
+#include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "url/origin.h"
 
 namespace blink {
 struct WebPluginParams;
 struct WebRect;
 }
 
+namespace gfx {
+class Size;
+}
+
 namespace content {
 
 class CONTENT_EXPORT PluginPowerSaverHelper : public RenderFrameObserver {
  public:
   explicit PluginPowerSaverHelper(RenderFrame* render_frame);
   ~PluginPowerSaverHelper() override;
 
  private:
   friend class RenderFrameImpl;
 
   struct PeripheralPlugin {
     PeripheralPlugin(const url::Origin& content_origin,
                      const base::Closure& unthrottle_callback);
     ~PeripheralPlugin();
 
     url::Origin content_origin;
     base::Closure unthrottle_callback;
   };
 
   // See RenderFrame for documentation.
   void RegisterPeripheralPlugin(const url::Origin& content_origin,
                                 const base::Closure& unthrottle_callback);
-  bool ShouldThrottleContent(const url::Origin& main_frame_origin,
-                             const url::Origin& content_origin,
-                             int width,
-                             int height,
-                             bool* cross_origin_main_content) const;
+  RenderFrame::PeripheralContentStatus GetPeripheralContentStatus(
+      const url::Origin& main_frame_origin,
+      const url::Origin& content_origin,
+      const gfx::Size& unobscured_size) const;
   void WhitelistContentOrigin(const url::Origin& content_origin);
 
   // RenderFrameObserver implementation.
   void DidCommitProvisionalLoad(bool is_new_navigation,
                                 bool is_same_page_navigation) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   void OnUpdatePluginContentOriginWhitelist(
       const std::set<url::Origin>& origin_whitelist);
 
   // Local copy of the whitelist for the entire tab.
   std::set<url::Origin> origin_whitelist_;
 
   // Set of peripheral plugins eligible to be unthrottled ex post facto.
   std::vector<PeripheralPlugin> peripheral_plugins_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginPowerSaverHelper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PLUGIN_POWER_SAVER_HELPER_H_