Add TestBrowserThreadBundle into RenderViewHostTestHarness. Kill some unnecessary real threads.

chrome/browser/extensions/webstore_inline_installer_unittest.cc

 // Copyright (c) 2012 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 <vector>
 
 #include "chrome/browser/extensions/webstore_inline_installer.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 44 matching lines @@
   virtual void TearDown() OVERRIDE;
 
   bool TestSingleVerifiedSite(const std::string& requestor_url,
                               const std::string& verified_site);
 
   bool TestMultipleVerifiedSites(
       const std::string& requestor_url,
       const std::vector<std::string>& verified_sites);
 
  protected:
-  WebstoreInlineInstallerTest()
-      : thread_(content::BrowserThread::UI, &message_loop_) {}
-
-  content::TestBrowserThread thread_;
   scoped_ptr<content::WebContents> web_contents_;
 };
 
 void WebstoreInlineInstallerTest::SetUp() {
   ChromeRenderViewHostTestHarness::SetUp();
   web_contents_.reset(CreateTestWebContents());
 }
 
 void WebstoreInlineInstallerTest::TearDown() {
   web_contents_.reset(NULL);
@@ skipping 142 matching lines @@
                                          verified_sites));
 
   EXPECT_FALSE(TestMultipleVerifiedSites("http://baz.example.com",
                                          verified_sites));
 
   EXPECT_FALSE(TestMultipleVerifiedSites("http://bar.example.com:456",
                                          verified_sites));
 }
 
 }  // namespace extensions