Do not leak a DictionaryValue from RendererOverridesHandlerTest.QueryUsageAndQuota.

content/browser/devtools/renderer_overrides_handler_browsertest.cc

 // Copyright 2013 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 "base/json/json_reader.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/devtools/renderer_overrides_handler.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 56 matching lines @@
     RenderViewHost* rvh = shell()->web_contents()->GetRenderViewHost();
     DevToolsAgentHost* agent = DevToolsAgentHost::GetOrCreateFor(rvh).get();
     scoped_ptr<RendererOverridesHandler> handler(
         new RendererOverridesHandler(agent));
     handler->SetNotifier(base::Bind(
         &RendererOverridesHandlerTest::OnMessageSent, base::Unretained(this)));
     return handler.release();
   }
 
   void OnMessageSent(const std::string& message) {
-    base::DictionaryValue* root =
-        static_cast<base::DictionaryValue*>(base::JSONReader::Read(message));
+    scoped_ptr<base::DictionaryValue> root(
+        static_cast<base::DictionaryValue*>(base::JSONReader::Read(message)));
     base::DictionaryValue* result;
     root->GetDictionary("result", &result);
-    result_.reset(result);
+    result_.reset(result->DeepCopy());
     base::MessageLoop::current()->QuitNow();
   }
 };
 
 IN_PROC_BROWSER_TEST_F(RendererOverridesHandlerTest, QueryUsageAndQuota) {
   DictionaryValue* params = new DictionaryValue();
   params->SetString("securityOrigin", "http://example.com");
   SendAsyncCommand("Page.queryUsageAndQuota", params);
 
   EXPECT_TRUE(HasValue("quota.persistent"));
   EXPECT_TRUE(HasValue("quota.temporary"));
   EXPECT_TRUE(HasListItem("usage.temporary", "id", "appcache"));
   EXPECT_TRUE(HasListItem("usage.temporary", "id", "database"));
   EXPECT_TRUE(HasListItem("usage.temporary", "id", "indexeddatabase"));
   EXPECT_TRUE(HasListItem("usage.temporary", "id", "filesystem"));
   EXPECT_TRUE(HasListItem("usage.persistent", "id", "filesystem"));
 }
 
 }  // namespace content