Plugin Power Saver: Refactor some Tiny plugin code and tests.

chrome/browser/plugins/plugin_power_saver_browsertest.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 <stdint.h>
 #include <string>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/stl_util.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/scoped_feature_list.h"
 #include "build/build_config.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
+#include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/test_switches.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/zoom/zoom_controller.h"
@@ skipping 533 matching lines @@
   LoadHTML("/zoom_independent.html");
   VerifyPluginIsThrottled(GetActiveWebContents(), "plugin");
 }
 
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, BlockTinyPlugins) {
   LoadHTML("/block_tiny_plugins.html");
 
   VerifyPluginMarkedEssential(GetActiveWebContents(), "tiny_same_origin");
   VerifyPluginIsPlaceholderOnly("tiny_cross_origin_1");
   VerifyPluginIsPlaceholderOnly("tiny_cross_origin_2");
+
+  TabSpecificContentSettings* tab_specific_content_settings =
+      TabSpecificContentSettings::FromWebContents(GetActiveWebContents());
+  EXPECT_FALSE(tab_specific_content_settings->blocked_plugin_names().empty());
 }
 
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, BackgroundTabTinyPlugins) {
   content::WebContents* background_contents =
       LoadHTMLInBackgroundTab("/background_tab_tiny_plugins.html");
   EXPECT_FALSE(PluginLoaded(background_contents, "tiny"));
 
   ActivateTab(background_contents);
   VerifyPluginIsPlaceholderOnly("tiny");
 }
@@ skipping 32 matching lines @@
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverPreferHtmlBrowserTest,
                        ThrottlePluginsOnAllowContentSetting) {
   HostContentSettingsMap* content_settings_map =
       HostContentSettingsMapFactory::GetForProfile(browser()->profile());
 
   content_settings_map->SetDefaultContentSetting(CONTENT_SETTINGS_TYPE_PLUGINS,
                                                  CONTENT_SETTING_ALLOW);
   LoadPeripheralPlugin();
   VerifyPluginIsThrottled(GetActiveWebContents(), "plugin");
 }