Cleanup: Remove trailing whitespaces in gyp files.

build/mac/asan.gyp

 # Copyright (c) 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': 'asan_dynamic_runtime',
        'type': 'none',
        'variables': {
          # Every target is going to depend on asan_dynamic_runtime, so allow
          # this one to depend on itself.
          'prune_self_dependency': 1,
          # Path is relative to this GYP file.
          'asan_rtl_mask_path':
              '../../third_party/llvm-build/Release+Asserts/lib/clang/*/lib/darwin',
          'asan_osx_dynamic':
@@ skipping 23 matching lines @@
                    'files': [ '<!(/bin/ls <(asan_osx_dynamic))'],
                  }],
                  ['_toolset=="target"', {
                    'files': [ '<!(/bin/ls <(asan_iossim_dynamic))'],
                  }],
                ],
              },
            ],
          }],
        ],
-     },  
-   ],  
+     },
+   ],
 }