Update chrome/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/common/extensions/manifest_tests/extension_manifests_homepage_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 "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 16 matching lines @@
              errors::kInvalidHomepageURL)
   };
   RunTestcases(testcases, arraysize(testcases),
                EXPECT_TYPE_ERROR);
 }
 
 TEST_F(HomepageURLManifestTest, GetHomepageURL) {
   scoped_refptr<extensions::Extension> extension(
       LoadAndExpectSuccess("homepage_valid.json"));
   EXPECT_EQ(GURL("http://foo.com#bar"),
-            extensions::ManifestURL::GetHomepageURL(extension));
+            extensions::ManifestURL::GetHomepageURL(extension.get()));
 
   // The Google Gallery URL ends with the id, which depends on the path, which
   // can be different in testing, so we just check the part before id.
   extension = LoadAndExpectSuccess("homepage_google_hosted.json");
   EXPECT_TRUE(StartsWithASCII(
-      extensions::ManifestURL::GetHomepageURL(extension).spec(),
-      "https://chrome.google.com/webstore/detail/", false));
+      extensions::ManifestURL::GetHomepageURL(extension.get()).spec(),
+      "https://chrome.google.com/webstore/detail/",
+      false));
 
   extension = LoadAndExpectSuccess("homepage_externally_hosted.json");
-  EXPECT_EQ(GURL(), extensions::ManifestURL::GetHomepageURL(extension));
+  EXPECT_EQ(GURL(), extensions::ManifestURL::GetHomepageURL(extension.get()));
 }