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

Source/modules/websockets/WorkerThreadableWebSocketChannel.cpp

Index: Source/modules/websockets/WorkerThreadableWebSocketChannel.cpp
diff --git a/Source/modules/websockets/WorkerThreadableWebSocketChannel.cpp b/Source/modules/websockets/WorkerThreadableWebSocketChannel.cpp
index f66c0f15f6d66acb8b278374a6aceecec3760a6e..90146edf4358ac7ea36b218eaebf14bc4c360929 100644
--- a/Source/modules/websockets/WorkerThreadableWebSocketChannel.cpp
+++ b/Source/modules/websockets/WorkerThreadableWebSocketChannel.cpp
@@ -50,6 +50,7 @@
 #include "public/platform/Platform.h"
 #include "public/platform/WebWaitableEvent.h"
 #include "wtf/ArrayBuffer.h"
+#include "wtf/Assertions.h"
 #include "wtf/Functional.h"
 #include "wtf/MainThread.h"
 
@@ -305,6 +306,12 @@ void WorkerThreadableWebSocketChannel::Peer::sendArrayBuffer(PassOwnPtr<Vector<c
         m_syncHelper->setSendRequestResult(WebSocketChannel::SendFail);
     } else {
         RefPtr<ArrayBuffer> binaryData = ArrayBuffer::create(data->data(), data->size());
+        if (!binaryData) {
+            // 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();
+        }
         WebSocketChannel::SendResult sendRequestResult = m_mainWebSocketChannel->send(*binaryData, 0, binaryData->byteLength());
         m_syncHelper->setSendRequestResult(sendRequestResult);
     }