Eliminate the launcher speech recognizer's dependency on the start page WebContents.

chrome/browser/ui/app_list/speech_recognizer_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/ui/app_list/speech_recognizer.h"
 
 #include "base/command_line.h"
 #include "base/memory/weak_ptr.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/platform_thread.h"
 #include "chrome/browser/ui/app_list/speech_recognizer_delegate.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/fake_speech_recognition_manager.h"
-#include "content/public/test/web_contents_tester.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::InvokeWithoutArgs;
 using ::testing::Return;
 
 namespace app_list {
 
 class MockSpeechRecognizerDelegate : public SpeechRecognizerDelegate {
  public:
   MockSpeechRecognizerDelegate() : weak_factory_(this) {}
 
   base::WeakPtr<MockSpeechRecognizerDelegate> GetWeakPtr() {
     return weak_factory_.GetWeakPtr();
   }
 
   MOCK_METHOD2(OnSpeechResult, void(const base::string16&, bool));
   MOCK_METHOD1(OnSpeechSoundLevelChanged, void(int16_t));
   MOCK_METHOD1(OnSpeechRecognitionStateChanged, void(SpeechRecognitionState));
-  MOCK_METHOD0(GetSpeechContents, content::WebContents*());
   MOCK_METHOD2(GetSpeechAuthParameters, void(std::string*, std::string*));
 
  private:
   base::WeakPtrFactory<MockSpeechRecognizerDelegate> weak_factory_;
 };
 
 class AppListSpeechRecognizerBrowserTest : public InProcessBrowserTest {
  public:
   AppListSpeechRecognizerBrowserTest() {}
 
   void SetUpOnMainThread() override {
     InProcessBrowserTest::SetUpOnMainThread();
 
     fake_speech_recognition_manager_.reset(
         new content::FakeSpeechRecognitionManager());
     fake_speech_recognition_manager_->set_should_send_fake_response(true);
     content::SpeechRecognitionManager::SetManagerForTesting(
         fake_speech_recognition_manager_.get());
     mock_speech_delegate_.reset(new MockSpeechRecognizerDelegate());
-    test_contents_.reset(content::WebContentsTester::CreateTestWebContents(
-        browser()->profile(), NULL));
   }
 
   void TearDownOnMainThread() override {
-    // This puts stuff on the IO loop which needs to be executed.
-    test_contents_.reset();
-
     // Poor-person's way of ensuring IO loop is idle.
     auto io_loop = content::BrowserThread::UnsafeGetMessageLoopForThread(
         content::BrowserThread::IO);
     ASSERT_TRUE(io_loop);
     while (!io_loop->IsIdleForTesting()) {
       // Sleep for a little bit, allowing the IO thread to obtain any locks
       // taken by IsIdleForTesting(). Without this sleep, this loop may livelock
       // the message loop causing the test to fail.
       base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(10));
     }
   }
 
  protected:
   scoped_ptr<content::FakeSpeechRecognitionManager>
       fake_speech_recognition_manager_;
   scoped_ptr<MockSpeechRecognizerDelegate> mock_speech_delegate_;
-  scoped_ptr<content::WebContents> test_contents_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppListSpeechRecognizerBrowserTest);
 };
 
 IN_PROC_BROWSER_TEST_F(AppListSpeechRecognizerBrowserTest, RecognizeSpeech) {
   SpeechRecognizer recognizer(mock_speech_delegate_->GetWeakPtr(),
                               browser()->profile()->GetRequestContext(),
                               "en");
 
   base::RunLoop run_loop;
-  EXPECT_CALL(*mock_speech_delegate_, GetSpeechContents())
-      .WillOnce(Return(test_contents_.get()));
   EXPECT_CALL(*mock_speech_delegate_,
               OnSpeechResult(base::ASCIIToUTF16("Pictures of the moon"), true));
   EXPECT_CALL(*mock_speech_delegate_,
               OnSpeechRecognitionStateChanged(SPEECH_RECOGNITION_READY))
       .WillOnce(InvokeWithoutArgs(&run_loop, &base::RunLoop::Quit));
   recognizer.Start();
   run_loop.Run();
 }
 
 }  // namespace app_list