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

android_webview/android_webview.gyp

Index: android_webview/android_webview.gyp
diff --git a/android_webview/android_webview.gyp b/android_webview/android_webview.gyp
index aad1cc7c325ddf1ee4da48797e5b356cead649fa..1656582646c21a2398a2bba06cb454955ed7172e 100644
--- a/android_webview/android_webview.gyp
+++ b/android_webview/android_webview.gyp
@@ -37,7 +37,53 @@
             'pak_output': '<(PRODUCT_DIR)/android_webview_assets/en-US.pak',
           },
          'includes': [ '../build/repack_action.gypi' ],
-        }
+        },
+      ],
+      'conditions': [
+	['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)',
+	      ],
+	    },
+	  ],
+	}],
       ],
     },
     {