Introduce a v8::Platform class that bundles embedder callbacks

src/v8.cc

Index: src/v8.cc
diff --git a/src/v8.cc b/src/v8.cc
index 17007a2a2cffddf0960119374cdb6f1857e5f3e9..92c45fa42ab90f50bc88360275a9874040e09785 100644
--- a/src/v8.cc
+++ b/src/v8.cc
@@ -52,6 +52,7 @@ V8_DECLARE_ONCE(init_once);
 
 List<CallCompletedCallback>* V8::call_completed_callbacks_ = NULL;
 v8::ArrayBuffer::Allocator* V8::array_buffer_allocator_ = NULL;
+v8::Platform* V8::platform_ = NULL;
 
 
 bool V8::Initialize(Deserializer* des) {
@@ -194,4 +195,23 @@ void V8::InitializeOncePerProcess() {
   CallOnce(&init_once, &InitializeOncePerProcessImpl);
 }
 
+
+void V8::InitializePlatform(v8::Platform* platform) {
+  ASSERT(!platform_);
+  ASSERT(platform);
+  platform_ = platform;
+}
+
+
+void V8::ShutdownPlatform() {
+  ASSERT(platform_);
+  platform_ = NULL;
+}
+
+
+v8::Platform* V8::GetCurrentPlatform() {
+  ASSERT(platform_);
+  return platform_;
+}
+
 } }  // namespace v8::internal