Plugin Power Saver Tiny: Treat completely obscured plugins as Tiny.

chrome/browser/plugins/plugin_power_saver_browsertest.cc

Index: chrome/browser/plugins/plugin_power_saver_browsertest.cc
diff --git a/chrome/browser/plugins/plugin_power_saver_browsertest.cc b/chrome/browser/plugins/plugin_power_saver_browsertest.cc
index e688838a30544df4208105ede29aa157199e66ce..d8431730f63e59cef55e773faf8d5264987267bb 100644
--- a/chrome/browser/plugins/plugin_power_saver_browsertest.cc
+++ b/chrome/browser/plugins/plugin_power_saver_browsertest.cc
@@ -569,6 +569,7 @@ IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, BlockTinyPlugins) {
   VerifyPluginMarkedEssential(GetActiveWebContents(), "tiny_same_origin");
   VerifyPluginIsPlaceholderOnly("tiny_cross_origin_1");
   VerifyPluginIsPlaceholderOnly("tiny_cross_origin_2");
+  VerifyPluginIsPlaceholderOnly("completely_obscured");
 
   TabSpecificContentSettings* tab_specific_content_settings =
       TabSpecificContentSettings::FromWebContents(GetActiveWebContents());