Move v8 snapshot renaming code to v8/BUILD.gn

build_overrides/v8.gni

Index: build_overrides/v8.gni
diff --git a/build_overrides/v8.gni b/build_overrides/v8.gni
index 2899ad12397481ed399349e50f1cb7e40afe7ebb..af9d9cc68275662e90eb6e183d409ec32c0dc82b 100644
--- a/build_overrides/v8.gni
+++ b/build_overrides/v8.gni
@@ -24,21 +24,3 @@ v8_extra_library_files = [
   "../third_party/WebKit/Source/core/streams/ReadableStream.js",
 ]
 v8_experimental_extra_library_files = []
-
-if (is_android) {
-  v8_external_startup_data_renaming_sources = [
-    "$root_out_dir/natives_blob.bin",
-    "$root_out_dir/snapshot_blob.bin",
-  ]
-  if (current_cpu == "arm" || current_cpu == "x86" || current_cpu == "mipsel") {
-    v8_external_startup_data_renaming_destinations = [
-      "natives_blob.bin",
-      "snapshot_blob_32.bin",
-    ]
-  } else {
-    v8_external_startup_data_renaming_destinations = [
-      "natives_blob.bin",
-      "snapshot_blob_64.bin",
-    ]
-  }
-}