Update DEPS to pull V8 from the new repository.

build/standalone.gypi

 # Copyright 2014 PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Definitions to be used when building stand-alone PDFium binaries.
 
 {
   'variables': {
     'component%': 'static_library',
     'clang%': 0,
@@ skipping 24 matching lines @@
         'target_arch%': '<(host_arch)',
       },
       'host_arch%': '<(host_arch)',
       'target_arch%': '<(target_arch)',
     },
     # These two are needed by V8.
     'host_arch%': '<(host_arch)',
     'target_arch%': '<(target_arch)',
     'werror%': '-Werror',
     'v8_optimized_debug%': 0,
+    'v8_use_external_startup_data%': 0,
     'icu_gyp_path': '../v8/third_party/icu/icu.gyp',
     'conditions': [
       ['OS == "win"', {
         'os_posix%': 0,
       }, {
         'os_posix%': 1,
       }],
     ],
   },
   'target_defaults': {
     'default_configuration': 'Debug',
     'configurations': {
       'Debug': {
         'cflags': [
           '-g',
-          '-O0',          
+          '-O0',
           '-fdata-sections',
           '-ffunction-sections',
         ],
         'msvs_settings': {
           'VCCLCompilerTool': {
             'Optimization': '0',
             'conditions': [
               ['component=="shared_library"', {
                 'RuntimeLibrary': '3',  # /MDd
               }, {
@@ skipping 62 matching lines @@
       },
       'Debug_x64': {
         'inherit_from': ['Debug'],
         'msvs_configuration_platform': 'x64',
       },
       'Release_x64': {
         'inherit_from': ['Release'],
         'msvs_configuration_platform': 'x64',
       },
     },
-    'defines!': [
-      'DEBUG',
-    ],
     'cflags': [
       '-Wall',
       '-W',
       '-Wno-unused-parameter',
       '-pthread',
       '-fno-exceptions',
       '-fvisibility=hidden',
     ],
     'cflags_cc': [
       '-std=gnu++0x',
@@ skipping 101 matching lines @@
     }],  # OS=="win"
     ['OS=="mac"', {
       'target_defaults': {
         'target_conditions': [
           ['_type!="static_library"', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
           }],
         ],  # target_conditions
       },  # target_defaults
     }],  # OS=="mac"
+    ['v8_use_external_startup_data==1', {
+      'target_defaults': {
+        'defines': [
+          'V8_USE_EXTERNAL_STARTUP_DATA',
+        ],
+      },
+    }],  # v8_use_external_startup_data==1
   ],
   'xcode_settings': {
     # See comment in Chromium's common.gypi for why this is needed.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   }
 }