gin: Use V8 Maybe APIs

gin/shell_runner.cc

Index: gin/shell_runner.cc
diff --git a/gin/shell_runner.cc b/gin/shell_runner.cc
index 8d98e425d745da3ec3236d0f08745fb16e84a4d1..ee856bd64437d6c6942e9e482534ed5692b0f9f4 100644
--- a/gin/shell_runner.cc
+++ b/gin/shell_runner.cc
@@ -67,9 +67,11 @@ void ShellRunner::Run(const std::string& source,
                       const std::string& resource_name) {
   TryCatch try_catch;
   v8::Isolate* isolate = GetContextHolder()->isolate();
-  v8::Handle<Script> script = Script::Compile(
-      StringToV8(isolate, source), StringToV8(isolate, resource_name));
-  if (try_catch.HasCaught()) {
+  v8::ScriptOrigin origin(StringToV8(isolate, resource_name));
+  auto maybe_script = Script::Compile(GetContextHolder()->context(),
+                                      StringToV8(isolate, source), &origin);
+  v8::Local<Script> script;
+  if (!maybe_script.ToLocal(&script)) {
     delegate_->UnhandledException(this, try_catch);
     return;
   }
@@ -84,10 +86,12 @@ v8::Handle<v8::Value> ShellRunner::Call(v8::Handle<v8::Function> function,
   TryCatch try_catch;
   delegate_->WillRunScript(this);
 
-  v8::Handle<v8::Value> result = function->Call(receiver, argc, argv);
+  auto maybe_result =
+      function->Call(GetContextHolder()->context(), receiver, argc, argv);
 
   delegate_->DidRunScript(this);
-  if (try_catch.HasCaught())
+  v8::Local<v8::Value> result;
+  if (!maybe_result.ToLocal(&result))
     delegate_->UnhandledException(this, try_catch);
 
   return result;
@@ -101,10 +105,11 @@ void ShellRunner::Run(v8::Handle<Script> script) {
   TryCatch try_catch;
   delegate_->WillRunScript(this);
 
-  script->Run();
+  auto maybe = script->Run(GetContextHolder()->context());
 
   delegate_->DidRunScript(this);
-  if (try_catch.HasCaught()) {
+  v8::Local<v8::Value> result;
+  if (!maybe.ToLocal(&result)) {
     delegate_->UnhandledException(this, try_catch);
   }
 }