Fixing ppapi_proxy.gyp to work in new location.

ppapi/native_client/src/shared/ppapi_proxy/ppapi_proxy.gyp

 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'includes': [
-    '../../../build/common.gypi',
+    '../../../../../native_client/build/common.gypi',
   ],
   'targets': [
     {
       'target_name': 'nacl_ppapi_browser',
       'type': 'static_library',
       'sources': [
         'browser_callback.cc',
         'browser_globals.cc',
         'browser_nacl_file_rpc_server.cc',
         'browser_ppb_audio_rpc_server.cc',
@@ skipping 33 matching lines @@
         'browser_upcall.cc',
         'input_event_data.cc',
         'object_serialize.cc',
         'utility.cc',
         # Autogerated files
         'ppp_rpc_client.cc',
         'ppb_rpc_server.cc',
         'upcall_server.cc',
       ],
       'include_dirs': [
-        '<(DEPTH)/native_client/src/shared/ppapi_proxy/trusted',
+        '<(DEPTH)/ppapi/native_client/src/shared/ppapi_proxy/trusted',
+        '<(DEPTH)/ppapi',
       ],
       'dependencies': [
         '<(DEPTH)/native_client/src/shared/ppapi/ppapi.gyp:ppapi_c_nacl',
       ],
     },
   ],
 }