Add TestBrowserThreadBundle into RenderViewHostTestHarness. Kill some unnecessary real threads.

chrome/browser/ui/find_bar/find_backend_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 "base/string16.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/find_bar/find_bar_state.h"
 #include "chrome/browser/ui/find_bar/find_bar_state_factory.h"
 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/web_contents.h"
-#include "content/public/test/test_browser_thread.h"
 #include "content/public/test/web_contents_tester.h"
 
-using content::BrowserThread;
 using content::WebContents;
 using content::WebContentsTester;
 
 class FindBackendTest : public ChromeRenderViewHostTestHarness {
- public:
-  FindBackendTest()
-      : ChromeRenderViewHostTestHarness(),
-        browser_thread_(BrowserThread::UI, &message_loop_) {}
-
- private:
+ protected:
   virtual void SetUp() OVERRIDE {
     ChromeRenderViewHostTestHarness::SetUp();
     FindTabHelper::CreateForWebContents(web_contents());
   }
-
-  content::TestBrowserThread browser_thread_;
 };
 
 namespace {
 
 string16 FindPrepopulateText(WebContents* contents) {
   Profile* profile = Profile::FromBrowserContext(contents->GetBrowserContext());
   return FindBarStateFactory::GetLastPrepopulateText(profile);
 }
 
 }  // end namespace
@@ skipping 50 matching lines @@
   // find_tab_helper (as indicated by the last two params).
   find_tab_helper->StartFinding(search_term3, true, false);
 
   // Once more, pre-populate string should always match between the two, but
   // find_text should not.
   EXPECT_EQ(search_term3, FindPrepopulateText(web_contents()));
   EXPECT_EQ(search_term3, find_tab_helper->find_text());
   EXPECT_EQ(search_term3, FindPrepopulateText(contents2.get()));
   EXPECT_EQ(search_term2, find_tab_helper2->find_text());
 }