Start splitting out WebUI into an implementation class and an interface that each page implements...

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',
     '../net/net.gyp:net',
@@ skipping 69 matching lines @@
     'public/browser/sensors_listener.h',
     'public/browser/ssl_status.cc',
     'public/browser/ssl_status.h',
     'public/browser/user_metrics.h',
     'public/browser/web_contents.h',
     'public/browser/web_contents_delegate.cc',
     'public/browser/web_contents_delegate.h',
     'public/browser/web_contents_observer.cc',
     'public/browser/web_contents_observer.h',
     'public/browser/web_intents_dispatcher.h',
+    'public/browser/web_ui_controller.cc',
+    'public/browser/web_ui_controller.h',
     'public/browser/web_ui_factory.h',
     'public/browser/web_ui_message_handler.h',
     'public/browser/worker_service.h',
     'public/browser/worker_service_observer.h',
     'browser/accessibility/browser_accessibility.cc',
     'browser/accessibility/browser_accessibility.h',
     'browser/accessibility/browser_accessibility_cocoa.h',
     'browser/accessibility/browser_accessibility_cocoa.mm',
     'browser/accessibility/browser_accessibility_delegate_mac.h',
     'browser/accessibility/browser_accessibility_mac.h',
@@ skipping 719 matching lines @@
         'ENABLE_JAVA_BRIDGE',
       ],
     }, {
       'sources/': [
         ['exclude', '^browser/renderer_host/java/'],
       ],
     }],
   ],
 }