Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp

Index: third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
diff --git a/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp b/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
index e006b9ceb4d14567167c6a4607dae3917a431507..030d2d260177352e3049481a85c4deb310d5fa76 100644
--- a/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
+++ b/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
@@ -90,8 +90,10 @@ void MIDIInput::didReceiveMIDIData(unsigned portIndex, const unsigned char* data
     // unless the current process has an explicit permission to handle sysex message.
     if (data[0] == 0xf0 && !midiAccess()->sysexEnabled())
         return;
-    RefPtr<DOMUint8Array> array = DOMUint8Array::create(data, length);
-    dispatchEvent(MIDIMessageEvent::create(timeStamp, array));
+    RefPtr<DOMUint8Array> array = DOMUint8Array::createOrNull(data, length);
+    // Silently fail if array allocation failed (out of memory).
+    if (array)
+        dispatchEvent(MIDIMessageEvent::create(timeStamp, array.release()));
 }
 
 DEFINE_TRACE(MIDIInput)