Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/modules/mediastream/RTCDataChannel.cpp

Index: third_party/WebKit/Source/modules/mediastream/RTCDataChannel.cpp
diff --git a/third_party/WebKit/Source/modules/mediastream/RTCDataChannel.cpp b/third_party/WebKit/Source/modules/mediastream/RTCDataChannel.cpp
index 1e756bb8170965b3f9922f955760aded94e3e1cb..5592d8f367787afe2dded0e88f965ef2a154397d 100644
--- a/third_party/WebKit/Source/modules/mediastream/RTCDataChannel.cpp
+++ b/third_party/WebKit/Source/modules/mediastream/RTCDataChannel.cpp
@@ -287,8 +287,10 @@ void RTCDataChannel::didReceiveRawData(const char* data, size_t dataLength)
         return;
     }
     if (m_binaryType == BinaryTypeArrayBuffer) {
-        RefPtr<DOMArrayBuffer> buffer = DOMArrayBuffer::create(data, dataLength);
-        scheduleDispatchEvent(MessageEvent::create(buffer.release()));
+        RefPtr<DOMArrayBuffer> buffer = DOMArrayBuffer::createOrNull(data, dataLength);
+        // Being out of memory results in silent failure: message dropped.
+        if (buffer)
+            scheduleDispatchEvent(MessageEvent::create(buffer.release()));
         return;
     }
     ASSERT_NOT_REACHED();