Fix initial focus, and the way elements are disabled on the 'Clear browsing data' dialog.

chrome/browser/ui/webui/options/clear_browser_data_browsertest.cc

 // Copyright 2014 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 "chrome/browser/browsing_data/browsing_data_remover_test_util.h"
 #include "chrome/browser/ui/webui/options/options_ui_browsertest.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/test/browser_test_utils.h"
 
 namespace options {
 
 class ClearBrowserDataBrowserTest : public OptionsUIBrowserTest {
  protected:
   void ClickElement(const std::string& selector) {
     bool element_enabled = false;
     ASSERT_NO_FATAL_FAILURE(GetElementEnabledState(selector, &element_enabled));
     ASSERT_TRUE(element_enabled);
     ASSERT_TRUE(content::ExecuteScript(
         GetSettingsFrame(),
         "document.querySelector('" + selector + "').click();"));
   }
 
   bool IsElementEnabled(const std::string& selector) {
     bool element_enabled = false;
     GetElementEnabledState(selector, &element_enabled);
     return element_enabled;
   }
 
+  bool IsElementInFocus(const std::string& selector) {
+    bool element_in_focus = false;
+    EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
+        GetSettingsFrame(),
+        "window.domAutomationController.send(document.querySelector('" +
+            selector + "') == document.activeElement);",
+        &element_in_focus));
+    return element_in_focus;
+  }
+
  private:
   void GetElementEnabledState(
       const std::string& selector,
       bool* enabled) {
     ASSERT_TRUE(content::ExecuteScriptAndExtractBool(
         GetSettingsFrame(),
         "window.domAutomationController.send(!document.querySelector('" +
             selector + "').disabled);",
         enabled));
   }
 };
 
 IN_PROC_BROWSER_TEST_F(ClearBrowserDataBrowserTest,
                        CommitButtonDisabledWhileDeletionInProgress) {
+  const char kTimePeriodSelectorId[] = "#clear-browser-data-time-period";
   const char kCommitButtonId[] = "#clear-browser-data-commit";
   BrowsingDataRemoverCompletionInhibitor completion_inhibitor;
 
   // Navigate to the Clear Browsing Data dialog to ensure that the commit button
   // is initially enabled, usable, and gets disabled after having been pressed.
+  // Also verify that the time period combo-box gets the initial focus.
   NavigateToSettingsSubpage(chrome::kClearBrowserDataSubPage);
+  EXPECT_TRUE(IsElementInFocus(kTimePeriodSelectorId));
   ASSERT_NO_FATAL_FAILURE(ClickElement(kCommitButtonId));
   EXPECT_FALSE(IsElementEnabled(kCommitButtonId));
 
   completion_inhibitor.BlockUntilNearCompletion();
 
   // Simulate a reload while the previous removal is still running, and verify
   // that the button is still disabled.
   NavigateToSettingsSubpage(chrome::kClearBrowserDataSubPage);
   EXPECT_FALSE(IsElementEnabled(kCommitButtonId));
 
   completion_inhibitor.ContinueToCompletion();
 
   // However, the button should be enabled again once the process has finished.
   NavigateToSettingsSubpage(chrome::kClearBrowserDataSubPage);
   EXPECT_TRUE(IsElementEnabled(kCommitButtonId));
 }
 
 }  // namespace options