Name V8 snapshot according to target architecture (32/64 bit).

android_webview/android_webview.gyp

 # Copyright 2009 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'android_webview_pak',
@@ skipping 38 matching lines @@
               'action': [
                 'python',
                 '<(rename_locales)',
                 '-p', '<(PRODUCT_DIR)',
                 '-s', '<(SHARED_INTERMEDIATE_DIR)',
                 '<@(locales)',
               ],
             }
           ],
         }],
+        ['v8_use_external_startup_data==1', {
+          'variables': {
+            'conditions': [
+              ['(target_arch=="arm" or target_arch=="x86" or target_arch=="mips")', {
+                'arch_suffix':'32'
+              }],
+              ['(target_arch=="arm64" or target_arch=="x86_64" or target_arch=="mips64")', {
+                'arch_suffix':'64'
+              }],
+            ],
+          },
+          'actions': [
+            {
+              'action_name': 'rename_snapshot_blob',
+              'inputs': [
+                '<(PRODUCT_DIR)/snapshot_blob.bin',
+              ],
+              'outputs': [
+                '<(PRODUCT_DIR)/snapshot_blob_<(arch_suffix).bin',
+              ],
+              'action': [
+                'python',
+                '<(DEPTH)/build/cp.py',
+                '<@(_inputs)',
+                '<@(_outputs)',
+              ],
+            },
+            {
+              'action_name': 'rename_natives_blob',
+              'inputs': [
+                '<(PRODUCT_DIR)/natives_blob.bin',
+              ],
+              'outputs': [
+                '<(PRODUCT_DIR)/natives_blob_<(arch_suffix).bin',
+              ],
+              'action': [
+                'python',
+                '<(DEPTH)/build/cp.py',
+                '<@(_inputs)',
+                '<@(_outputs)',
+              ],
+            },
+          ],
+        }],
       ],
     },
     {
       'target_name': 'android_webview_strings_grd',
       'android_unmangled_name': 1,
       'type': 'none',
       'variables': {
         'grd_file': '../android_webview/java/strings/android_webview_strings.grd',
       },
       'includes': [
@@ skipping 290 matching lines @@
             '../ui/android/ui_android.gyp:ui_strings_grd',
             'android_webview_jarjar_content_resources',
             'android_webview_jarjar_ui_resources',
             'android_webview_strings_grd',
           ],
         },
       ],
     }],
   ],
 }