Adding checks for V8 functions returning Maybe<bool>

third_party/WebKit/Source/bindings/core/v8/WindowProxy.cpp

 /*
  * Copyright (C) 2008, 2009, 2011 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:
  *
  *     * 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
@@ skipping 515 matching lines @@
     ASSERT(m_world->isMainWorld());
 
     if (!isContextInitialized() || !m_scriptState->contextIsValid())
         return;
 
     ScriptState::Scope scope(m_scriptState.get());
     ASSERT(!m_document.isEmpty());
     v8::Local<v8::Context> context = m_scriptState->context();
     v8::Local<v8::Object> documentHandle = m_document.newLocal(m_isolate);
     checkDocumentWrapper(documentHandle, document);
-    documentHandle->SetAccessor(context, v8String(m_isolate, name), getter);
+    if (documentHandle->SetAccessor(context, v8String(m_isolate, name), getter).IsNothing()) {
+        // TODO: What action, if any, should be taken here?
+    }
 }
 
 void WindowProxy::namedItemRemoved(HTMLDocument* document, const AtomicString& name)
 {
     ASSERT(m_world->isMainWorld());
 
     if (!isContextInitialized())
         return;
 
     if (document->hasNamedItem(name) || document->hasExtraNamedItem(name))
         return;
 
     ScriptState::Scope scope(m_scriptState.get());
     ASSERT(!m_document.isEmpty());
     v8::Local<v8::Object> documentHandle = m_document.newLocal(m_isolate);
     checkDocumentWrapper(documentHandle, document);
-    documentHandle->Delete(m_isolate->GetCurrentContext(), v8String(m_isolate, name));
+    if (documentHandle->Delete(m_isolate->GetCurrentContext(), v8String(m_isolate, name)).IsNothing()) {
+        // TODO: What action, if any, should be taken here?
+    }
 }
 
 void WindowProxy::updateSecurityOrigin(SecurityOrigin* origin)
 {
     if (!isContextInitialized())
         return;
     setSecurityToken(origin);
 }
 
 } // namespace blink