Revert of V8: Remove obsolete environment variables

scripts/slave/recipe_modules/v8/builders.py

 # Copyright 2014 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.
 
 # Contains the bulk of the V8 builder configurations so they can be reused
 # from multiple recipes.
 
 from recipe_engine.types import freeze
 from testing import V8NoExhaustiveVariants, V8Variant, V8VariantNeutral
 
@@ skipping 1053 matching lines @@
       },
     },
   },
 ####### Waterfall: client.v8.ports
   'client.v8.ports': {
     'builders': {
 ####### Category: Arm
       'V8 Arm - builder': {
         'chromium_apply_config': [
             'v8_ninja', 'default_compiler', 'goma', 'arm_hard_float'],
+        'v8_apply_config': ['arm_hard_float'],
         'v8_config_kwargs': {
           'BUILD_CONFIG': 'Release',
           'TARGET_ARCH': 'arm',
           'TARGET_BITS': 32,
         },
         'bot_type': 'builder',
         'build_gs_archive': 'arm_rel_archive',
         'enable_swarming': True,
         'testing': {'platform': 'linux'},
         'triggers': [
           'V8 Arm',
         ],
         'triggers_proxy': True,
       },
       'V8 Arm - debug builder': {
         'chromium_apply_config': [
             'v8_ninja', 'default_compiler', 'goma', 'arm_hard_float'],
+        'v8_apply_config': ['arm_hard_float'],
         'v8_config_kwargs': {
           'BUILD_CONFIG': 'Debug',
           'TARGET_ARCH': 'arm',
           'TARGET_BITS': 32,
         },
         'bot_type': 'builder',
         'build_gs_archive': 'arm_dbg_archive',
         'enable_swarming': True,
         'testing': {'platform': 'linux'},
         'triggers': [
@@ skipping 1403 matching lines @@
 dart_win_release['chromium_apply_config'].extend(['v8_ninja', 'msvs2013'])
 
 BUILDERS = freeze(BUILDERS)
 BRANCH_BUILDERS = freeze(BRANCH_BUILDERS)
 
 def iter_builders():
   for mastername, master_config in BUILDERS.iteritems():
     builders = master_config['builders']
     for buildername, bot_config in builders.iteritems():
       yield mastername, builders, buildername, bot_config