Begin implementing V8 bindings for Mojo

mojo/apps/js/v8_environment.cc

-// Copyright 2013 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.
-
-#include "mojo/apps/js/v8_environment.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "mojo/public/system/macros.h"
-#include "v8/include/v8.h"
-
-namespace mojo {
-namespace apps {
-
-namespace {
-
-class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
-  virtual void* Allocate(size_t length) MOJO_OVERRIDE {
-    return calloc(1, length);
-  }
-  virtual void* AllocateUninitialized(size_t length) MOJO_OVERRIDE {
-    return malloc(length);
-  }
-  virtual void Free(void* data, size_t length) MOJO_OVERRIDE {
-    free(data);
-  }
-};
-
-bool GenerateEntropy(unsigned char* buffer, size_t amount) {
-  // TODO(abarth): Mojo needs a source of entropy.
-  // https://code.google.com/p/chromium/issues/detail?id=316387
-  return false;
-}
-
-const char kFlags[] = "--use_strict --harmony";
-
-}
-
-void InitializeV8() {
-  v8::V8::SetArrayBufferAllocator(new ArrayBufferAllocator());
-  v8::V8::InitializeICU();
-  v8::V8::SetFlagsFromString(kFlags, strlen(kFlags));
-  v8::V8::SetEntropySource(&GenerateEntropy);
-  v8::V8::Initialize();
-}
-
-}  // namespace apps
-}  // mojo