Move ExtensionHost into extensions namespace

chrome/browser/extensions/extension_browsertest.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_
 
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 136 matching lines @@
                   bool newtab_process_should_equal_opener,
                   content::WebContents** newtab_result);
 
   // Simulates a page navigating itself to an URL and waits for the
   // navigation.
   void NavigateInRenderer(content::WebContents* contents, const GURL& url);
 
   // Looks for an ExtensionHost whose URL has the given path component
   // (including leading slash).  Also verifies that the expected number of hosts
   // are loaded.
-  ExtensionHost* FindHostWithPath(ExtensionProcessManager* manager,
-                                  const std::string& path,
-                                  int expected_hosts);
+  extensions::ExtensionHost* FindHostWithPath(ExtensionProcessManager* manager,
+                                              const std::string& path,
+                                              int expected_hosts);
 
   // content::NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   bool loaded_;
   bool installed_;
 
   // test_data/extensions.
@@ skipping 32 matching lines @@
   // When waiting for page action count to change, we wait until it reaches this
   // value.
   int target_page_action_count_;
 
   // When waiting for visible page action count to change, we wait until it
   // reaches this value.
   int target_visible_page_action_count_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_