Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp

Index: third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
diff --git a/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp b/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
index ff536e8f8519f75d5f28303292f26148cf32ebf9..54ee50729d870bdb67b9697aa16a2c530a8a6e33 100644
--- a/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
+++ b/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
@@ -151,7 +151,11 @@ ScriptPromise MediaKeys::setServerCertificate(ScriptState* scriptState, const DO
 
     // 3. Let certificate be a copy of the contents of the serverCertificate
     //    parameter.
-    RefPtr<DOMArrayBuffer> serverCertificateBuffer = DOMArrayBuffer::create(serverCertificate.data(), serverCertificate.byteLength());
+    RefPtr<DOMArrayBuffer> serverCertificateBuffer = DOMArrayBuffer::createOrNull(serverCertificate.data(), serverCertificate.byteLength());
+    if (!serverCertificateBuffer) {
+        return ScriptPromise::rejectWithDOMException(
+            scriptState, DOMException::create(V8RangeError, "Out of Memory. Server certificate buffer allocation failed."));
+    }
 
     // 4. Let promise be a new promise.
     SimpleContentDecryptionModuleResultPromise* result = new SimpleContentDecryptionModuleResultPromise(scriptState);