Move WebstoreInstaller, WebstoreInlineInstaller, related in extensions namespace

chrome/browser/extensions/webstore_inline_installer_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/browser/extensions/webstore_inline_installer.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace extensions {
+
 // A macro, so that the IsRequestorURLInVerifiedSite calls are inside of the
 // the test, which is marked as a friend of WebstoreInlineInstaller.
 #define IsVerified(requestor_url, verified_site) \
   WebstoreInlineInstaller::IsRequestorURLInVerifiedSite( \
       GURL(requestor_url), verified_site)
 
 TEST(WebstoreInlineInstallerTest, DomainVerification) {
   // Exact domain match.
   EXPECT_TRUE(IsVerified("http://example.com", "example.com"));
 
@@ skipping 43 matching lines @@
   EXPECT_TRUE(IsVerified("http://example.com/path/", "example.com/path"));
 
   // Path matches (is a file under the path).
   EXPECT_TRUE(IsVerified(
       "http://example.com/path/page.html", "example.com/path"));
 
   // Path and port match.
   EXPECT_TRUE(IsVerified(
       "http://example.com:123/path/page.html", "example.com:123/path"));
 }
+
+}  // namespace extensions