No need to have DevToolsManager reference counted

content/browser/debugger/devtools_manager_unittest.cc

 // Copyright (c) 2011 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/basictypes.h"
 #include "content/browser/debugger/devtools_client_host.h"
 #include "content/browser/debugger/devtools_manager.h"
 #include "content/browser/renderer_host/test_render_view_host.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 56 matching lines @@
   }
 
  protected:
   virtual void SetUp() {
     RenderViewHostTestHarness::SetUp();
     TestDevToolsClientHost::ResetCounters();
   }
 };
 
 TEST_F(DevToolsManagerTest, OpenAndManuallyCloseDevToolsClientHost) {
-  scoped_refptr<DevToolsManager> manager(new DevToolsManager());
+  DevToolsManager manager;
 
-  DevToolsClientHost* host = manager->GetDevToolsClientHostFor(rvh());
+  DevToolsClientHost* host = manager.GetDevToolsClientHostFor(rvh());
   EXPECT_TRUE(NULL == host);
 
   TestDevToolsClientHost client_host;
-  manager->RegisterDevToolsClientHostFor(rvh(), &client_host);
+  manager.RegisterDevToolsClientHostFor(rvh(), &client_host);
   // Test that just registered devtools host is returned.
-  host = manager->GetDevToolsClientHostFor(rvh());
+  host = manager.GetDevToolsClientHostFor(rvh());
   EXPECT_TRUE(&client_host == host);
   EXPECT_EQ(0, TestDevToolsClientHost::close_counter);
 
   // Test that the same devtools host is returned.
-  host = manager->GetDevToolsClientHostFor(rvh());
+  host = manager.GetDevToolsClientHostFor(rvh());
   EXPECT_TRUE(&client_host == host);
   EXPECT_EQ(0, TestDevToolsClientHost::close_counter);
 
   client_host.Close();
   EXPECT_EQ(1, TestDevToolsClientHost::close_counter);
-  host = manager->GetDevToolsClientHostFor(rvh());
+  host = manager.GetDevToolsClientHostFor(rvh());
   EXPECT_TRUE(NULL == host);
 }
 
 TEST_F(DevToolsManagerTest, ForwardMessageToClient) {
-  scoped_refptr<DevToolsManager> manager(new DevToolsManager());
+  DevToolsManager manager;
 
   TestDevToolsClientHost client_host;
-  manager->RegisterDevToolsClientHostFor(rvh(), &client_host);
+  manager.RegisterDevToolsClientHostFor(rvh(), &client_host);
   EXPECT_EQ(0, TestDevToolsClientHost::close_counter);
 
   IPC::Message m;
-  manager->ForwardToDevToolsClient(rvh(), m);
+  manager.ForwardToDevToolsClient(rvh(), m);
   EXPECT_TRUE(&m == client_host.last_sent_message);
 
   client_host.Close();
   EXPECT_EQ(1, TestDevToolsClientHost::close_counter);
 }