Fixes gyp bindings generator dependencies

mojo/public/bindings/mojom_bindings_generator.gypi

 # 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.
 
 {
   'variables': {
     'output_dir': '<(SHARED_INTERMEDIATE_DIR)/mojom',
   },
   'rules': [
     {
@@ skipping 47 matching lines @@
         'python', '<@(mojom_bindings_generator)',
         '<(RULE_INPUT_PATH)',
         '-i', 'mojom',
         '-o', '<(output_dir)',
       ],
       'message': 'Generating C++ from mojom <(RULE_INPUT_PATH)',
       'process_outputs_as_sources': 1,
     }
   ],
   'dependencies': [
-    'mojo_bindings',
-    'mojo_system',
+    '<(DEPTH)/mojo/mojo.gyp:mojo_bindings',
+    '<(DEPTH)/mojo/mojo.gyp:mojo_system',
   ],
   'include_dirs': [
     '<(DEPTH)',
     '<(SHARED_INTERMEDIATE_DIR)',
   ],
   'direct_dependent_settings': {
     'include_dirs': [
       '<(DEPTH)',
       '<(SHARED_INTERMEDIATE_DIR)',
     ],
   },
   'hard_dependency': 1,
 }