Added framer to cast.

media/cast/framer/framer.gyp

 # Copyright 2013 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.
 
 {
   'targets': [
     {
-      'target_name': 'cast_rtp_packetizer',
+      'target_name': 'cast_framer',
       'type': 'static_library',
       'include_dirs': [
         '<(DEPTH)/',
         '<(DEPTH)/third_party/',
-        '<(DEPTH)/third_party/webrtc/',
+        '<(DEPTH)/third_party/webrtc',
       ],
       'sources': [
-        'rtp_packetizer.cc',
-        'rtp_packetizer.h',
-      ], # source
-      'dependencies': [
-        '<(DEPTH)/base/base.gyp:base',
-        '<(DEPTH)/net/net.gyp:*',
+        'cast_message_builder.cc',
+        'cast_message_builder.h',
+        'frame_buffer.cc',
+        'frame_buffer.h',
+        'frame_id_map.cc',
+        'frame_id_map.h',
+        'framer.cc',
+        'framer.h',
       ],
     },
-  ],
+  ], # targets
 }