Plugin Power Saver: Improve blocked tiny plugins behavior

chrome/renderer/plugins/power_saver_info.cc

 // 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.
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/renderer/plugins/power_saver_info.h"
@@ skipping 53 matching lines @@
         !params.attributeValues[i].isEmpty()) {
       return params.attributeValues[i].utf8();
     }
   }
   return std::string();
 }
 
 }  // namespace
 
 PowerSaverInfo::PowerSaverInfo()
-    : is_eligible(false),
-      power_saver_enabled(false),
-      blocked_for_background_tab(false) {}
+    : power_saver_enabled(false), blocked_for_background_tab(false) {}
 
 PowerSaverInfo::PowerSaverInfo(const PowerSaverInfo& other) = default;
 
 PowerSaverInfo PowerSaverInfo::Get(content::RenderFrame* render_frame,
                                    bool power_saver_setting_on,
                                    const blink::WebPluginParams& params,
                                    const content::WebPluginInfo& plugin_info,
                                    const GURL& document_url) {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   std::string override_for_testing = command_line->GetSwitchValueASCII(
       switches::kOverridePluginPowerSaverForTesting);
 
   // This feature has only been tested thoroughly with Flash thus far.
   // It is also enabled for the Power Saver test plugin for browser tests.
   bool is_flash =
       plugin_info.name == base::ASCIIToUTF16(content::kFlashPluginName);
 
   PowerSaverInfo info;
-  info.is_eligible = power_saver_setting_on &&
+  bool is_eligible = power_saver_setting_on &&
                      (is_flash || override_for_testing == "ignore-list");
   info.power_saver_enabled = override_for_testing == "always" ||
-                             (power_saver_setting_on && info.is_eligible);
+                             (power_saver_setting_on && is_eligible);
 
   if (info.power_saver_enabled) {
     // Even if we disable PPS in the next block because content is same-origin,
     // it should still be eligible for background tab deferral if PPS is on.
     info.blocked_for_background_tab = render_frame->IsHidden();
 
     auto status = render_frame->GetPeripheralContentStatus(
         render_frame->GetWebFrame()->top()->getSecurityOrigin(),
         url::Origin(params.url), gfx::Size());
 
@@ skipping 11 matching lines @@
       info.poster_attribute = GetPluginInstancePosterAttribute(params);
       info.base_url = document_url;
     }
   }
 
   if (is_flash)
     TrackPosterParamPresence(params, info.power_saver_enabled);
 
   return info;
 }