Cleanup: Remove trailing whitespaces in gyp files.

chrome/chrome_tests.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': {
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
-      'browser/apps/app_browsertest_util.h',   
+      'browser/apps/app_browsertest_util.h',
       'browser/extensions/browsertest_util.cc',
       'browser/extensions/browsertest_util.h',
       'browser/extensions/extension_apitest.cc',
-      'browser/extensions/extension_apitest.h',       
+      'browser/extensions/extension_apitest.h',
       'browser/extensions/extension_browsertest.cc',
       'browser/extensions/extension_browsertest.h',
       'browser/extensions/extension_function_test_utils.cc',
       'browser/extensions/extension_function_test_utils.h',
       'browser/extensions/extension_test_notification_observer.cc',
-      'browser/extensions/extension_test_notification_observer.h', 
+      'browser/extensions/extension_test_notification_observer.h',
       'browser/extensions/updater/extension_cache_fake.h',
-      'browser/extensions/updater/extension_cache_fake.cc',                      
+      'browser/extensions/updater/extension_cache_fake.cc',
     ],
     'chrome_browser_tests_sources': [
       # The list of sources which is only used by chrome browser tests.
       '../apps/app_restore_service_browsertest.cc',
       '../apps/load_and_launch_browsertest.cc',
       # TODO(blundell): Bring up a components_browsertests target and move
       # this test to be in that target. crbug.com/283846
       '../components/autofill/content/renderer/password_form_conversion_utils_browsertest.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.h',
       '../components/autofill/content/renderer/test_password_autofill_agent.cc',
@@ skipping 1652 matching lines @@
       'include_dirs': [
         '..',
         '<(SHARED_INTERMEDIATE_DIR)',
       ],
       'defines': [
         'HAS_OUT_OF_PROC_TEST_RUNNER',
       ],
       'sources': [
         '<@(chrome_browser_tests_sources)',
         '<@(chrome_browser_extensions_test_support_sources)',
-        'test/base/browser_tests_main.cc',        
+        'test/base/browser_tests_main.cc',
       ],
       'rules': [
         {
           'rule_name': 'js2webui',
           'extension': 'js',
           'msvs_external_rule': 1,
           'inputs': [
             '<(gypv8sh)',
             '<(PRODUCT_DIR)/d8<(EXECUTABLE_SUFFIX)',
             '<(mock_js)',
@@ skipping 1429 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }