Add "Instant:" prefix to Instant preview tabs in the Task manager.

chrome/browser/instant/instant_browsertest.cc

 // Copyright (c) 2011 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/string_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/instant/instant_loader.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
+#include "chrome/browser/task_manager/task_manager.h"
+#include "chrome/browser/task_manager/task_manager_browsertest_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/omnibox/location_bar.h"
 #include "chrome/browser/ui/omnibox/omnibox_view.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_widget_host_view.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/public/browser/notification_service.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
 
 // Tests are flaky on Linux because of http://crbug.com/80118.
 #if defined(OS_LINUX)
 #define MAYBE(TestName) DISABLED_ ## TestName
 #else
 #define MAYBE(TestName) TestName
 #endif
 
 class InstantTest : public InProcessBrowserTest {
  public:
@@ skipping 753 matching lines @@
   omnibox()->SetUserText(ASCIIToUTF16("def"));
   ASSERT_TRUE(CheckVisibilityIs(preview_contents, true));
   ASSERT_TRUE(CheckVisibilityIs(initial_contents, false));
 
   // Commit the preview.
   ASSERT_TRUE(PressEnter());
   EXPECT_EQ(preview_contents, browser()->GetSelectedTabContents());
   ASSERT_TRUE(CheckVisibilityIs(preview_contents, true));
 }
 
+// Tests that the task manager identifies instant's preview tab correctly.
+IN_PROC_BROWSER_TEST_F(InstantTest, MAYBE(TaskManagerPrefix)) {
+  // The browser starts with one new tab, so the task manager should have two
+  // rows initially, one for the browser process and one for tab's renderer.
+  TaskManagerModel* task_manager = TaskManager::GetInstance()->model();
+  task_manager->StartUpdating();
+  TaskManagerBrowserTestUtil::WaitForResourceChange(2);
+
+  ASSERT_TRUE(test_server()->Start());
+  EnableInstant();
+  SetupInstantProvider("instant.html");
+  DetermineInstantSupport();
+  SearchAndWaitForPreviewToShow();
+
+  // Now there should be three rows, the third being the instant preview.
+  TaskManagerBrowserTestUtil::WaitForResourceChange(3);
+  string16 prefix = l10n_util::GetStringFUTF16(
+      IDS_TASK_MANAGER_INSTANT_PREVIEW_PREFIX, string16());
+  string16 title = task_manager->GetResourceTitle(2);
+  EXPECT_TRUE(StartsWith(title, prefix, true)) << title << " vs " << prefix;
+}
+
 // Tests the INSTANT experiment of the field trial.
 class InstantFieldTrialInstantTest : public InstantTest {
  public:
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     command_line->AppendSwitchASCII(switches::kInstantFieldTrial,
                                     switches::kInstantFieldTrialInstant);
   }
 };
 
 // Tests that instant is active, even without calling EnableInstant().
@@ skipping 156 matching lines @@
   // Press <Enter> in the omnibox, causing the preview to be committed.
   TabContents* preview_tab = preview()->tab_contents();
   ASSERT_TRUE(PressEnter());
 
   // The preview contents should now be the active tab contents.
   EXPECT_FALSE(preview());
   EXPECT_FALSE(instant()->is_displayable());
   EXPECT_FALSE(instant()->IsCurrent());
   EXPECT_EQ(preview_tab, browser()->GetSelectedTabContents());
 }