[builtins] Migrate escape/unescape from uri.js to C++.

BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 if (is_android) {
@@ skipping 338 matching lines @@
   # NOSORT
   sources = [
     "src/js/macros.py",
     "src/messages.h",
     "src/js/prologue.js",
     "src/js/runtime.js",
     "src/js/v8natives.js",
     "src/js/symbol.js",
     "src/js/array.js",
     "src/js/string.js",
-    "src/js/uri.js",
     "src/js/math.js",
     "src/third_party/fdlibm/fdlibm.js",
     "src/js/regexp.js",
     "src/js/arraybuffer.js",
     "src/js/typedarray.js",
     "src/js/iterator-prototype.js",
     "src/js/collection.js",
     "src/js/weak-collection.js",
     "src/js/collection-iterator.js",
     "src/js/promise.js",
@@ skipping 1023 matching lines @@
     "src/runtime/runtime-object.cc",
     "src/runtime/runtime-operators.cc",
     "src/runtime/runtime-proxy.cc",
     "src/runtime/runtime-regexp.cc",
     "src/runtime/runtime-scopes.cc",
     "src/runtime/runtime-simd.cc",
     "src/runtime/runtime-strings.cc",
     "src/runtime/runtime-symbol.cc",
     "src/runtime/runtime-test.cc",
     "src/runtime/runtime-typedarray.cc",
-    "src/runtime/runtime-uri.cc",
     "src/runtime/runtime-utils.h",
     "src/runtime/runtime.cc",
     "src/runtime/runtime.h",
     "src/safepoint-table.cc",
     "src/safepoint-table.h",
     "src/signature.h",
     "src/simulator.h",
     "src/small-pointer-list.h",
     "src/snapshot/code-serializer.cc",
     "src/snapshot/code-serializer.h",
@@ skipping 787 matching lines @@
   sources = [
     "test/fuzzer/wasm-asmjs.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }