Reduce string copies in GURL creation

third_party/mozilla/mozilla.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': 'mozilla',
       'type': '<(component)',
       'sources': [
@@ skipping 13 matching lines @@
       ],
       'defines': [
         'MOZILLA_IMPLEMENTATION',
       ],
       'link_settings': {
         'libraries': [
           '$(SDKROOT)/System/Library/Frameworks/AppKit.framework',
         ],
       },
       'dependencies': [
+        '../../base/base.gyp:base',
         '../../url/url.gyp:url_lib',
       ],
       'conditions': [
         ['component=="shared_library"',
           {
             # Needed to link to Obj-C static libraries.
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
           }
         ],
       ],
     },
   ],
 }