Add TestBrowserThreadBundle into RenderViewHostTestHarness. Kill some unnecessary real threads.

chrome/browser/chromeos/drive/drive_file_stream_reader_unittest.cc

Index: chrome/browser/chromeos/drive/drive_file_stream_reader_unittest.cc
diff --git a/chrome/browser/chromeos/drive/drive_file_stream_reader_unittest.cc b/chrome/browser/chromeos/drive/drive_file_stream_reader_unittest.cc
index f266d2122df46185bf920149748725f5a6ee7466..a703ef343130355d71795c4fa843605b3a1e706a 100644
--- a/chrome/browser/chromeos/drive/drive_file_stream_reader_unittest.cc
+++ b/chrome/browser/chromeos/drive/drive_file_stream_reader_unittest.cc
@@ -20,7 +20,7 @@
 #include "chrome/browser/google_apis/fake_drive_service.h"
 #include "chrome/browser/google_apis/task_util.h"
 #include "chrome/browser/google_apis/test_util.h"
-#include "content/public/test/test_browser_thread.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
@@ -43,7 +43,7 @@ void IncrementCallback(int* num_called) {
 
 class LocalReaderProxyTest : public ::testing::Test {
  protected:
-  LocalReaderProxyTest() : io_thread_(BrowserThread::IO, &message_loop_) {
+  LocalReaderProxyTest() : thread_bundle_(IO_MAINLOOP) {
   }
 
   virtual void SetUp() OVERRIDE {
@@ -59,8 +59,7 @@ class LocalReaderProxyTest : public ::testing::Test {
     worker_thread_.reset();
   }
 
-  base::MessageLoopForIO message_loop_;
-  content::TestBrowserThread io_thread_;
+  content::TestBrowserThreadBundle thread_bundle_;
 
   base::ScopedTempDir temp_dir_;
   base::FilePath file_path_;
@@ -109,11 +108,10 @@ TEST_F(LocalReaderProxyTest, ReadWithLimit) {
 
 class NetworkReaderProxyTest : public ::testing::Test {
  protected:
-  NetworkReaderProxyTest() : io_thread_(BrowserThread::IO, &message_loop_) {
+  NetworkReaderProxyTest() : thread_bundle_(IO_MAINLOOP) {
   }
 
-  base::MessageLoopForIO message_loop_;
-  content::TestBrowserThread io_thread_;
+  content::TestBrowserThreadBundle thread_bundle_;
 };
 
 TEST_F(NetworkReaderProxyTest, EmptyFile) {
@@ -288,39 +286,13 @@ TEST_F(NetworkReaderProxyTest, CancelJob) {
 
 class DriveFileStreamReaderTest : public ::testing::Test {
  protected:
-  DriveFileStreamReaderTest()
-      : ui_thread_(BrowserThread::UI),
-        io_thread_(BrowserThread::IO, &message_loop_) {
+  DriveFileStreamReaderTest() : thread_bundle_(IO_MAINLOOP) {
   }
 
   virtual void SetUp() OVERRIDE {
-    ui_thread_.Start();
-
     worker_thread_.reset(new base::Thread("DriveFileStreamReaderTest"));
     ASSERT_TRUE(worker_thread_->Start());
 
-    BrowserThread::PostTaskAndReply(
-        BrowserThread::UI,
-        FROM_HERE,
-        base::Bind(&DriveFileStreamReaderTest::SetUpOnUIThread,
-                   base::Unretained(this)),
-        base::MessageLoop::QuitClosure());
-    message_loop_.Run();
-  }
-
-  virtual void TearDown() OVERRIDE {
-    BrowserThread::PostTaskAndReply(
-        BrowserThread::UI,
-        FROM_HERE,
-        base::Bind(&DriveFileStreamReaderTest::TearDownOnUIThread,
-                   base::Unretained(this)),
-        base::MessageLoop::QuitClosure());
-    message_loop_.Run();
-
-    worker_thread_.reset();
-  }
-
-  void SetUpOnUIThread() {
     // Initialize FakeDriveService.
     fake_drive_service_.reset(new google_apis::FakeDriveService);
     fake_drive_service_->LoadResourceListForWapi(
@@ -334,9 +306,11 @@ class DriveFileStreamReaderTest : public ::testing::Test {
     fake_file_system_->Initialize();
   }
 
-  void TearDownOnUIThread() {
+  virtual void TearDown() OVERRIDE {
     fake_file_system_.reset();
     fake_drive_service_.reset();
+
+    worker_thread_.reset();
   }
 
   FileSystemInterface* GetFileSystem() {
@@ -348,9 +322,7 @@ class DriveFileStreamReaderTest : public ::testing::Test {
                       base::Unretained(this));
   }
 
-  base::MessageLoopForIO message_loop_;
-  content::TestBrowserThread ui_thread_;
-  content::TestBrowserThread io_thread_;
+  content::TestBrowserThreadBundle thread_bundle_;
 
   scoped_ptr<base::Thread> worker_thread_;