Add the ability to set embedder data on created contexts from the API

src/api.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 427 matching lines @@
     return;
   }
 
   // Content of 'last_context' could be NULL.
   i::Handle<i::Object> last_context = thread_local.RestoreContext();
   i::Top::set_context(static_cast<i::Context*>(*last_context));
   i::GlobalHandles::Destroy(last_context.location());
 }
 
 
+void Context::SetData(v8::Handle<Value> data) {
+  if (IsDeadCheck("v8::Context::SetData()")) return;
+  ENTER_V8;
+  {
+    HandleScope scope;
+    i::Handle<i::Context> env = Utils::OpenHandle(this);
+    i::Handle<i::Object> raw_data = Utils::OpenHandle(*data);
+    ASSERT(env->IsGlobalContext());
+    if (env->IsGlobalContext()) {
+      env->set_data(*raw_data);
+    }
+  }
+}
+
+
+v8::Local<v8::Value> Context::GetData() {
+  if (IsDeadCheck("v8::Context::GetData()")) return v8::Local<Value>();
+  ENTER_V8;
+  i::Object* raw_result = NULL;
+  {
+    HandleScope scope;
+    i::Handle<i::Context> env = Utils::OpenHandle(this);
+    ASSERT(env->IsGlobalContext());
+    if (env->IsGlobalContext()) {
+      raw_result = env->data();
+    } else {
+      return Local<Value>();
+    }
+  }
+  i::Handle<i::Object> result(raw_result);
+  return Utils::ToLocal(result);
+}
+
+
 void** v8::HandleScope::RawClose(void** value) {
   if (!ApiCheck(!is_closed_,
                 "v8::HandleScope::Close()",
                 "Local scope has already been closed")) {
     return 0;
   }
   LOG_API("CloseHandleScope");
 
   // Read the result before popping the handle block.
   i::Object* result = reinterpret_cast<i::Object*>(*value);
@@ skipping 2961 matching lines @@
       reinterpret_cast<HandleScopeImplementer*>(storage);
   List<void**>* blocks_of_archived_thread = thread_local->Blocks();
   v8::ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
       &thread_local->handle_scope_data_;
   Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
 
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal