Plugin Power Saver: Do not always throttle plugins with posters.

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 "base/command_line.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 207 matching lines @@
       "    width='400' height='500'"
       "    poster='snapshot1x.png 1x, snapshot2x.png 2x'></embed>");
 
   EXPECT_FALSE(PluginLoaded(GetActiveWebContents(), "plugin_src"));
   EXPECT_FALSE(PluginLoaded(GetActiveWebContents(), "plugin_srcset"));
   EXPECT_FALSE(PluginLoaded(GetActiveWebContents(), "plugin_legacy_syntax"));
   EXPECT_FALSE(PluginLoaded(GetActiveWebContents(), "plugin_embed_src"));
   EXPECT_FALSE(PluginLoaded(GetActiveWebContents(), "plugin_embed_srcset"));
 }
 
+IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, LargePostersNotThrottled) {
+  // This test verifies that small posters are throttled, large posters are not,
+  // and that large posters can whitelist origins for other plugins.
+  LoadHTML(
+      "<object id='poster_small' data='http://a.com/fake.swf' "
+      "    type='application/x-ppapi-tests' width='50' height='50' "
+      "    poster='click_me.png'></object>"
+      "<object id='poster_whitelisted_origin' data='http://b.com/fake.swf' "
+      "    type='application/x-ppapi-tests' width='50' height='50' "
+      "    poster='click_me.png'></object>"
+      "<object id='plugin_whitelisted_origin' data='http://b.com/fake.swf' "
+      "    type='application/x-ppapi-tests' width='50' height='50'></object>"
+      "<br>"
+      "<object id='poster_large' data='http://b.com/fake.swf' "
+      "    type='application/x-ppapi-tests' width='400' height='300' "
+      "    poster='click_me.png'></object>");
+
+  EXPECT_FALSE(PluginLoaded(GetActiveWebContents(), "poster_small"));
+  VerifyPluginMarkedEssential(GetActiveWebContents(),
+                              "plugin_whitelisted_origin");
+  VerifyPluginMarkedEssential(GetActiveWebContents(), "poster_large");
+}
+
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest,
                        PluginMarkedEssentialAfterPosterClicked) {
   LoadHTML(
       "<object id='plugin' type='application/x-ppapi-tests' "
       "    width='400' height='100' poster='snapshot1x.png'></object>");
   EXPECT_FALSE(PluginLoaded(GetActiveWebContents(), "plugin"));
 
   SimulateClickAndAwaitMarkedEssential("plugin", gfx::Point(50, 50));
 }
 
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, OriginWhitelisting) {
   LoadHTML(
-      "<object id='plugin1' data='http://otherorigin.com/fake1.swf' "
-      "    type='application/x-ppapi-tests' width='400' height='100'></object>"
-      "<object id='plugin2' data='http://otherorigin.com/fake2.swf' "
+      "<object id='plugin_small' data='http://a.com/fake1.swf' "
+      "    type='application/x-ppapi-tests' width='100' height='100'></object>"
+      "<object id='plugin_small_poster' data='http://a.com/fake1.swf' "
+      "    type='application/x-ppapi-tests' width='100' height='100' "
+      "    poster='click_me.png'></object>"
+      "<object id='plugin_large' data='http://a.com/fake2.swf' "
       "    type='application/x-ppapi-tests' width='400' height='500'>"
       "</object>");
-  VerifyPluginMarkedEssential(GetActiveWebContents(), "plugin1");
-  VerifyPluginMarkedEssential(GetActiveWebContents(), "plugin2");
+  VerifyPluginMarkedEssential(GetActiveWebContents(), "plugin_small");
+  VerifyPluginMarkedEssential(GetActiveWebContents(), "plugin_small_poster");
+  VerifyPluginMarkedEssential(GetActiveWebContents(), "plugin_large");
 }
 
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, LargeCrossOriginObscured) {
   LoadHTML(
       "<div id='container' "
       "    style='width: 400px; height: 100px; overflow: hidden;'>"
       "  <object id='plugin' data='http://otherorigin.com/fake.swf' "
       "      type='application/x-ppapi-tests' width='400' height='500'>"
       "  </object>"
       "</div>");
@@ skipping 48 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, ZoomIndependent) {
   ui_zoom::ZoomController::FromWebContents(GetActiveWebContents())
       ->SetZoomLevel(4.0);
   LoadHTML(
       "<object id='plugin' data='http://otherorigin.com/fake.swf' "
       "    type='application/x-ppapi-tests' width='400' height='200'>"
       "</object>");
   VerifyPluginIsThrottled(GetActiveWebContents(), "plugin");
 }