Infrastructure for reading V8's initial snapshot from external files

chrome/chrome_dll_bundle.gypi

Index: chrome/chrome_dll_bundle.gypi
diff --git a/chrome/chrome_dll_bundle.gypi b/chrome/chrome_dll_bundle.gypi
index f1eda453395a306f9c13f7cfb8cc6a592ec23f48..c522f2f29e43868028f5a29b7956c50e76624ade 100644
--- a/chrome/chrome_dll_bundle.gypi
+++ b/chrome/chrome_dll_bundle.gypi
@@ -302,5 +302,11 @@
         '<(PRODUCT_DIR)/icudtl.dat',
       ],
     }],
+    ['v8_use_external_startup_data==1', {
+      'mac_bundle_resources': [
+        '<(PRODUCT_DIR)/natives_blob.bin',
+        '<(PRODUCT_DIR)/snapshot_blob.bin',
+      ],
+    }],
   ],  # conditions
 }