Fix out-of-memory crashes related to ArrayBuffer allocation

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

Index: third_party/WebKit/Source/modules/webmidi/MIDIOutput.cpp
diff --git a/third_party/WebKit/Source/modules/webmidi/MIDIOutput.cpp b/third_party/WebKit/Source/modules/webmidi/MIDIOutput.cpp
index 9ea9e0dfdf9266329deb5761592abde71230d524..0e3e5b1079c1e0057cec5eb00bf665c8c22d4c5a 100644
--- a/third_party/WebKit/Source/modules/webmidi/MIDIOutput.cpp
+++ b/third_party/WebKit/Source/modules/webmidi/MIDIOutput.cpp
@@ -215,7 +215,15 @@ void MIDIOutput::send(Vector<unsigned> unsignedData, double timestamp, Exception
     if (timestamp == 0.0)
         timestamp = now(executionContext());
 
-    RefPtr<DOMUint8Array> array = DOMUint8Array::create(unsignedData.size());
+    // TODO(junov): crbug.com/536816
+    // Use createOrNull instead of deprecatedCreateOrCrash. Requires determining
+    // the appropriate course of action for dealing with allocation failures, which
+    // is currently not specified in the spec. Throwing a RangeError may be
+    // appropriate considering the ECMAScript spec:
+    // http://ecma-international.org/ecma-262/6.0/#sec-createbytedatablock
+    // However the spec for MIDIOutput.send does not state that such exceptions
+    // should be re-thrown, so for now we just crash the process when out of memory.
+    RefPtr<DOMUint8Array> array = DOMUint8Array::deprecatedCreateOrCrash(unsignedData.size());
     DOMUint8Array::ValueType* const arrayData = array->data();
     const uint32_t arrayLength = array->length();