Valgrind: Fix a leak.

chrome/browser/extensions/api/identity/web_auth_flow_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/message_loop.h"
 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
 #include "chrome/browser/ui/extensions/web_auth_flow_window.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 87 matching lines @@
 class WebAuthFlowTest : public ChromeRenderViewHostTestHarness {
  protected:
   WebAuthFlowTest()
       : thread_(BrowserThread::UI, &message_loop_) {
   }
 
   virtual void SetUp() {
     ChromeRenderViewHostTestHarness::SetUp();
   }
 
+  virtual void TearDown() {
+    // |flow_| must be reset before ChromeRenderViewHostTestHarness::TearDown(),
+    // because |flow_| deletes the WebContents it owns via
+    // MessageLoop::DeleteSoon().
+    flow_.reset();
+    ChromeRenderViewHostTestHarness::TearDown();
+  }
+
   void CreateAuthFlow(const std::string& extension_id, const GURL& url) {
     flow_.reset(new MockWebAuthFlow(&delegate_, profile(), extension_id, url));
   }
 
   MockWebAuthFlow& flow() {
     return *flow_.get();
   }
 
   WebAuthFlow* flow_base() {
     return flow_.get();
@@ skipping 82 matching lines @@
   // http scheme is not allowed.
   EXPECT_FALSE(CallIsValidRedirectUrl(
       GURL("http://abcdefghij.chromiumapp.org/callback")));
   EXPECT_FALSE(CallIsValidRedirectUrl(
       GURL("https://abcd.chromiumapp.org/callback")));
   EXPECT_FALSE(CallIsValidRedirectUrl(
       GURL("chrome-extension://abcd/callback")));
   EXPECT_FALSE(CallIsValidRedirectUrl(
       GURL("chrome-extension://abcdefghijkl/")));
 }