Crash the renderer when WebSocket fails to allocate an ArrayBuffer to set to a MessageEvent.

Source/modules/websockets/WebSocket.cpp

Index: Source/modules/websockets/WebSocket.cpp
diff --git a/Source/modules/websockets/WebSocket.cpp b/Source/modules/websockets/WebSocket.cpp
index 7939a9eac98c96391bf1a185274550ade89c67cf..2ae0d1509e7536223c77218042707a3c0225c71d 100644
--- a/Source/modules/websockets/WebSocket.cpp
+++ b/Source/modules/websockets/WebSocket.cpp
@@ -54,6 +54,7 @@
 #include "public/platform/Platform.h"
 #include "wtf/ArrayBuffer.h"
 #include "wtf/ArrayBufferView.h"
+#include "wtf/Assertions.h"
 #include "wtf/HashSet.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/StdLibExtras.h"
@@ -635,7 +636,14 @@ void WebSocket::didReceiveBinaryData(PassOwnPtr<Vector<char> > binaryData)
     }
 
     case BinaryTypeArrayBuffer:
-        m_eventQueue->dispatch(MessageEvent::create(ArrayBuffer::create(binaryData->data(), binaryData->size()), SecurityOrigin::create(m_url)->toString()));
+        RefPtr<ArrayBuffer> arrayBuffer = ArrayBuffer::create(binaryData->data(), binaryData->size());
+        if (!arrayBuffer) {
+            // Failed to allocate an ArrayBuffer. We need to crash the renderer
+            // since there's no way defined in the spec to tell this to the
+            // user.
+            CRASH();
+        }
+        m_eventQueue->dispatch(MessageEvent::create(arrayBuffer.release(), SecurityOrigin::create(m_url)->toString()));
         break;
     }
 }