Plugin Power Saver Tiny: Disable flaky test

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"
@@ skipping 597 matching lines @@
     // Although this is redundant with the Field Trial testing configuration,
     // the official builders don't read that.
     feature_list.InitWithFeatures({features::kFilterSameOriginTinyPlugin},
                                   {features::kPreferHtmlOverPlugins});
   }
 
  private:
   base::test::ScopedFeatureList feature_list;
 };
 
+// Flaky on Mac. crbug.com/680544
+#if defined(OS_MACOSX)
+#define MAYBE_BlockSameOriginTinyPlugin DISABLED_BlockSameOriginTinyPlugin
+#else
+#define MAYBE_BlockSameOriginTinyPlugin BlockSameOriginTinyPlugin
+#endif
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverFilterSameOriginTinyPluginsBrowserTest,
-                       BlockSameOriginTinyPlugin) {
+                       MAYBE_BlockSameOriginTinyPlugin) {
   LoadHTML("/same_origin_tiny_plugin.html");
 
   VerifyPluginIsPlaceholderOnly("tiny_same_origin");
 
   TabSpecificContentSettings* tab_specific_content_settings =
       TabSpecificContentSettings::FromWebContents(GetActiveWebContents());
   EXPECT_FALSE(tab_specific_content_settings->blocked_plugin_names().empty());
 }
 
 // Separate test case with HTML By Default feature flag on.
@@ skipping 13 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");
 }