Introduce content::RenderWidgetHostViewPort (in content/port/browser).

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': [
     'browser/debugger/devtools_resources.gyp:devtools_resources',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',
     '../net/net.gyp:net',
     '../ppapi/ppapi_internal.gyp:ppapi_proxy',
     '../skia/skia.gyp:skia',
     '../third_party/flac/flac.gyp:libflac',
     '../third_party/speex/speex.gyp:libspeex',
     '../third_party/WebKit/Source/WebKit/chromium/WebKit.gyp:webkit',
     '../third_party/zlib/zlib.gyp:zlib',
     '../ui/gfx/surface/surface.gyp:surface',
     '../ui/ui.gyp:ui',
     '../ui/ui.gyp:ui_resources',
     '../webkit/support/webkit_support.gyp:webkit_resources',
     '../webkit/support/webkit_support.gyp:webkit_strings',
   ],
   'include_dirs': [
     '..',
     '<(INTERMEDIATE_DIR)',
   ],
   'sources': [
+    'port/browser/render_widget_host_view_port.h',
     'public/browser/access_token_store.h',
     'public/browser/browser_child_process_host.h',
     'public/browser/browser_child_process_host_delegate.cc',
     'public/browser/browser_child_process_host_delegate.h',
     'public/browser/browser_child_process_host_iterator.cc',
     'public/browser/browser_child_process_host_iterator.h',
     'public/browser/browser_context.h',
     'public/browser/browser_main_parts.h',
     'public/browser/browser_main_runner.h',
     'public/browser/browser_message_filter.cc',
@@ skipping 46 matching lines @@
     'public/browser/plugin_data_remover.h',
     'public/browser/plugin_service.h',
     'public/browser/profiler_controller.h',
     'public/browser/profiler_subscriber.h',
     'public/browser/render_process_host.h',
     'public/browser/render_process_host_factory.h',
     'public/browser/render_view_host_delegate.cc',
     'public/browser/render_view_host_delegate.h',
     'public/browser/render_view_host_observer.cc',
     'public/browser/render_view_host_observer.h',
+    'public/browser/render_widget_host_view.h',
     'public/browser/render_widget_host_view_mac_delegate.h',
     'public/browser/resource_context.h',
     'public/browser/resource_dispatcher_host_delegate.cc',
     'public/browser/resource_dispatcher_host_delegate.h',
     'public/browser/resource_dispatcher_host_login_delegate.h',
     'public/browser/resource_throttle.h',
     'public/browser/resource_throttle_controller.h',
     'public/browser/save_page_type.h',
     'public/browser/sensors.h',
     'public/browser/sensors_listener.h',
@@ skipping 421 matching lines @@
     'browser/renderer_host/render_view_host.cc',
     'browser/renderer_host/render_view_host.h',
     'browser/renderer_host/render_view_host_factory.cc',
     'browser/renderer_host/render_view_host_factory.h',
     'browser/renderer_host/render_widget_helper.cc',
     'browser/renderer_host/render_widget_helper.h',
     'browser/renderer_host/render_widget_host.cc',
     'browser/renderer_host/render_widget_host.h',
     'browser/renderer_host/render_widget_host_gtk.cc',
     'browser/renderer_host/render_widget_host_mac.cc',
-    'browser/renderer_host/render_widget_host_view.cc',
-    'browser/renderer_host/render_widget_host_view.h',
+    'browser/renderer_host/render_widget_host_view_base.cc',
+    'browser/renderer_host/render_widget_host_view_base.h',
     'browser/renderer_host/render_widget_host_view_android.cc',
     'browser/renderer_host/render_widget_host_view_aura.cc',
     'browser/renderer_host/render_widget_host_view_aura.h',
     'browser/renderer_host/render_widget_host_view_gtk.cc',
     'browser/renderer_host/render_widget_host_view_gtk.h',
     'browser/renderer_host/render_widget_host_view_mac.h',
     'browser/renderer_host/render_widget_host_view_mac.mm',
     'browser/renderer_host/render_widget_host_view_mac_editcommand_helper.h',
     'browser/renderer_host/render_widget_host_view_mac_editcommand_helper.mm',
     'browser/renderer_host/render_widget_host_view_win.cc',
@@ skipping 297 matching lines @@
         'ENABLE_JAVA_BRIDGE',
       ],
     }, {
       'sources/': [
         ['exclude', '^browser/renderer_host/java/'],
       ],
     }],
   ],
 }