Reland Reland Switch Chrome Android using v8 arch specific external data name

build/android/v8_external_startup_data_arch_suffix.gypi

+# Copyright (c) 2015 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': {
+    'arch_suffix': '<(arch_suffix)',
+    'variables': {
+      # This help to find out if target_arch is set to something else.
+      'arch_suffix': '<(target_arch)',
+      'conditions': [
+        ['target_arch=="arm" or target_arch=="ia32" or target_arch=="mipsel"', {
+          'arch_suffix': '32',
+        }],
+        ['target_arch=="arm64" or target_arch=="x64" or target_arch=="mips64el"', {
+          'arch_suffix':'64'
+        }],
+      ],
+    }
+  }
+}