Plugin Power Saver: Make PPS work well with prerendered pages.

chrome/renderer/chrome_content_renderer_client.cc

 // Copyright (c) 2012 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 "chrome/renderer/chrome_content_renderer_client.h"
 
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 840 matching lines @@
 #endif  // !defined(DISABLE_NACL) && defined(ENABLE_EXTENSIONS)
 
 #if defined(ENABLE_PLUGINS)
         // Delay loading plugins if prerendering.
         // TODO(mmenke):  In the case of prerendering, feed into
         //                ChromeContentRendererClient::CreatePlugin instead, to
         //                reduce the chance of future regressions.
         bool is_prerendering =
             prerender::PrerenderHelper::IsPrerendering(render_frame);
 
-        // TODO(tommycli): Plugin Power Saver is disabled on prerendered pages.
+        // TODO(tommycli): Background tab plugin deferral is disabled.
         // This is because the placeholder does not feed back into
         // ChromeContentRendererClient::CreatePlugin. Because of this, it does
         // not handle the preroll to UI overlay placeholder flow correctly.
-        //
-        // Background tab plugin deferral is disabled for the same reason.
-        //
         // https://crbug.com/471427
         bool power_saver_enabled =
-            !is_prerendering &&
             status ==
                 ChromeViewHostMsg_GetPluginInfo_Status::kPlayImportantContent;
 
         if (info.name == ASCIIToUTF16(content::kFlashPluginName))
           TrackPosterParamPresence(params, power_saver_enabled);
 
         PlaceholderPosterInfo poster_info;
         if (power_saver_enabled) {
           poster_info.poster_attribute =
               GetPluginInstancePosterAttribute(params);
@@ skipping 764 matching lines @@
 
 void ChromeContentRendererClient::RecordRappor(const std::string& metric,
                                                const std::string& sample) {
   RenderThread::Get()->Send(new ChromeViewHostMsg_RecordRappor(metric, sample));
 }
 
 void ChromeContentRendererClient::RecordRapporURL(const std::string& metric,
                                                   const GURL& url) {
   RenderThread::Get()->Send(new ChromeViewHostMsg_RecordRapporURL(metric, url));
 }