Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index d124861ed419e3e543b309228fa97fa55e802566..5456e4d07f8eb4a704b37e214b609eba3766c512 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -2127,10 +2127,16 @@ bool Internals::cursorUpdatePending() const
     return frame()->eventHandler().cursorUpdatePending();
 }
 
+void Internals::fakeOutOfMemoryForNextArrayBufferAllocation() const
+{
+    WTF::ArrayBufferContents::fakeOutOfMemoryForNextArrayBufferAllocationForTesting();
+}
+
 PassRefPtr<DOMArrayBuffer> Internals::serializeObject(PassRefPtr<SerializedScriptValue> value) const
 {
     String stringValue = value->toWireString();
-    RefPtr<DOMArrayBuffer> buffer = DOMArrayBuffer::createUninitialized(stringValue.length(), sizeof(UChar));
+    RefPtr<DOMArrayBuffer> buffer = DOMArrayBuffer::createUninitializedOrNull(stringValue.length(), sizeof(UChar));
+    RELEASE_ASSERT(buffer); // Crash here means out of memory.
     stringValue.copyTo(static_cast<UChar*>(buffer->data()), 0, stringValue.length());
     return buffer.release();
 }