bindings: Use Maybe version of Get in bindings/

Source/bindings/core/v8/V8ThrowException.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 18 matching lines @@
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8DOMException.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
 
 namespace blink {
 
 static void domExceptionStackGetter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     ASSERT(info.Data()->IsObject());
-    v8SetReturnValue(info, info.Data()->ToObject(info.GetIsolate())->Get(v8AtomicString(info.GetIsolate(), "stack")));
+    v8::Isolate* isolate = info.GetIsolate();
+    v8::Local<v8::Value> value;
+    if (info.Data().As<v8::Object>()->Get(isolate->GetCurrentContext(), v8AtomicString(isolate, "stack")).ToLocal(&value))
+        v8SetReturnValue(info, value);
 }
 
 static void domExceptionStackSetter(v8::Local<v8::Name> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
 {
     ASSERT(info.Data()->IsObject());
     info.Data()->ToObject(info.GetIsolate())->Set(v8AtomicString(info.GetIsolate(), "stack"), value);
 }
 
 v8::Handle<v8::Value> V8ThrowException::createDOMException(v8::Isolate* isolate, int ec, const String& sanitizedMessage, const String& unsanitizedMessage, const v8::Handle<v8::Object>& creationContext)
 {
@@ skipping 108 matching lines @@
 }
 
 v8::Handle<v8::Value> V8ThrowException::throwException(v8::Handle<v8::Value> exception, v8::Isolate* isolate)
 {
     if (!v8::V8::IsExecutionTerminating())
         isolate->ThrowException(exception);
     return v8::Undefined(isolate);
 }
 
 } // namespace blink