Move ExtensionHost into extensions namespace

chrome/browser/extensions/extension_management_browsertest.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/memory/ref_counted.h"
 #include "base/stl_util.h"
 #include "chrome/browser/extensions/autoupdate_interceptor.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 26 matching lines @@
   // in the extension's manifest. We use the version as reported by the
   // background page to test how overinstalling crx files with the same
   // manifest version works.
   bool IsExtensionAtVersion(const Extension* extension,
                             const std::string& expected_version) {
     // Test that the extension's version from the manifest and reported by the
     // background page is correct.  This is to ensure that the processes are in
     // sync with the Extension.
     ExtensionProcessManager* manager = browser()->profile()->
         GetExtensionProcessManager();
-    ExtensionHost* ext_host =
+    extensions::ExtensionHost* ext_host =
         manager->GetBackgroundHostForExtension(extension->id());
     EXPECT_TRUE(ext_host);
     if (!ext_host)
       return false;
 
     std::string version_from_bg;
     bool exec = content::ExecuteJavaScriptAndExtractString(
         ext_host->render_view_host(), L"", L"version()", &version_from_bg);
     EXPECT_TRUE(exec);
     if (!exec)
@@ skipping 554 matching lines @@
         std::string(kExtensionId) + ";http://localhost/autoupdate/manifest"));
   }
   ASSERT_TRUE(WaitForExtensionInstall());
   ASSERT_EQ(size_before + 1, service->extensions()->size());
   extension = service->GetExtensionById(kExtensionId, false);
   ASSERT_TRUE(extension);
   EXPECT_EQ(Extension::EXTERNAL_POLICY_DOWNLOAD, extension->location());
   EXPECT_TRUE(service->IsExtensionEnabled(kExtensionId));
   EXPECT_TRUE(service->disabled_extensions()->is_empty());
 }