Plugin Power Saver: Add comprehensive browser 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 "base/command_line.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"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/test/browser_test_utils.h"
+#include "content/public/test/ppapi_test_utils.h"
+
+class PluginPowerSaverBrowserTest : virtual public InProcessBrowserTest {
+ public:
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    command_line->AppendSwitch(switches::kEnablePluginPowerSaver);
+
+    ppapi::RegisterTestLibrary(command_line);
+  }
+
+ protected:
+  void LoadHTML(const char* html) {
+    std::string url_str = "data:text/html;charset=utf-8,";
+    url_str.append(html);
+    ui_test_utils::NavigateToURL(browser(), GURL(url_str));
+  }
+
+  bool IsPluginPeripheral(const char* element_id) {
+    std::string script = base::StringPrintf(
+        "var plugin = window.document.getElementById('%s');"
+        "if (plugin != undefined) {"
+        "  var b = plugin.postMessage == undefined || plugin.isPeripheral();"
+        "  window.domAutomationController.send(b);"
+        "}",
+        element_id);
+
+    bool result = false;
+    EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
+        browser()->tab_strip_model()->GetActiveWebContents(), script, &result));
+    return result;
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, SmallSameOrigin) {
+  LoadHTML(
+      "<object id='plugin' data='fake.swf' "
+      "type='application/x-ppapi-tests' width='400' height='100'></object>");
+  EXPECT_FALSE(IsPluginPeripheral("plugin"));
+}
+
+IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, SmallCrossOrigin) {
+  LoadHTML(
+      "<object id='plugin' data='http://otherorigin.com/fake.swf' "
+      "type='application/x-ppapi-tests' width='400' height='100'></object>");
+  EXPECT_TRUE(IsPluginPeripheral("plugin"));
+}
+
+IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, LargeCrossOrigin) {
+  LoadHTML(
+      "<object id='plugin' data='http://otherorigin.com/fake.swf' "
+      "type='application/x-ppapi-tests' width='400' height='500'></object>");
+  EXPECT_FALSE(IsPluginPeripheral("plugin"));
+}
+
+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' "
+      "type='application/x-ppapi-tests' width='400' height='500'></object>");
+  EXPECT_FALSE(IsPluginPeripheral("plugin1"));
+  EXPECT_FALSE(IsPluginPeripheral("plugin2"));
+}
+
+IN_PROC_BROWSER_TEST_F(PluginPowerSaverBrowserTest, LargeCrossOriginObscured) {
+  LoadHTML(
+      "<div style='width: 100px; height: 100px; overflow: hidden;'>"
+      "  <object id='plugin' data='http://otherorigin.com/fake.swf' "
+      "  type='application/x-ppapi-tests' width='400' height='500'></object>"
+      "</div>");
+  EXPECT_TRUE(IsPluginPeripheral("plugin"));
+}