Revert "Revert "Const-ify RefCountedThreadSafe::AddRef and Release.""

chrome/test/testing_profile.cc

 // Copyright (c) 2010 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/test/testing_profile.h"
 
 #include "build/build_config.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
@@ skipping 104 matching lines @@
 // a leak if your test does not have a BrowserThread::IO in it because
 // URLRequestContextGetter is defined as a ReferenceCounted object with a
 // special trait that deletes it on the IO thread.
 class TestURLRequestContextGetter : public URLRequestContextGetter {
  public:
   virtual URLRequestContext* GetURLRequestContext() {
     if (!context_)
       context_ = new TestURLRequestContext();
     return context_.get();
   }
-  virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() {
+  virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() const {
     return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
   }
 
  private:
   scoped_refptr<URLRequestContext> context_;
 };
 
 class TestExtensionURLRequestContext : public URLRequestContext {
  public:
   TestExtensionURLRequestContext() {
     net::CookieMonster* cookie_monster = new net::CookieMonster(NULL, NULL);
     const char* schemes[] = {chrome::kExtensionScheme};
     cookie_monster->SetCookieableSchemes(schemes, 1);
     cookie_store_ = cookie_monster;
   }
 };
 
 class TestExtensionURLRequestContextGetter : public URLRequestContextGetter {
  public:
   virtual URLRequestContext* GetURLRequestContext() {
     if (!context_)
       context_ = new TestExtensionURLRequestContext();
     return context_.get();
   }
-  virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() {
+  virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() const {
     return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
   }
 
  private:
   scoped_refptr<URLRequestContext> context_;
 };
 
 }  // namespace
 
 TestingProfile::TestingProfile()
@@ skipping 344 matching lines @@
   }
   return profile_sync_service_.get();
 }
 
 void TestingProfile::DestroyWebDataService() {
   if (!web_data_service_.get())
     return;
 
   web_data_service_->Shutdown();
 }