[v8] don't crash when ArrayBuffer allocation fails

third_party/WebKit/Source/wtf/ArrayBufferContents.cpp

Index: third_party/WebKit/Source/wtf/ArrayBufferContents.cpp
diff --git a/third_party/WebKit/Source/wtf/ArrayBufferContents.cpp b/third_party/WebKit/Source/wtf/ArrayBufferContents.cpp
index d017b5690b80bb79f9e2320c4782f1e082988e6d..0962623bb8ff06baf9f5e52e83d81d52c80e93d6 100644
--- a/third_party/WebKit/Source/wtf/ArrayBufferContents.cpp
+++ b/third_party/WebKit/Source/wtf/ArrayBufferContents.cpp
@@ -106,6 +106,15 @@ void ArrayBufferContents::allocateMemory(size_t size, InitializationPolicy polic
         memset(data, '\0', size);
 }
 
+void ArrayBufferContents::allocateMemoryOrNull(size_t size, InitializationPolicy policy, void*& data)
+{
+    if (s_adjustAmountOfExternalAllocatedMemoryFunction)
+        s_adjustAmountOfExternalAllocatedMemoryFunction(static_cast<int>(size));
+    data = partitionAllocGenericFlags(WTF::Partitions::bufferPartition(), PartitionAllocReturnNull, size, WTF_HEAP_PROFILER_TYPE_NAME(ArrayBufferContents));
+    if (policy == ZeroInitialize && data)
+        memset(data, '\0', size);
+}

[Dan Ehrenberg, 2016/01/13 22:55:14]

Any way you could reduce the duplication here with the above method, for example
make it take flags as an argument?

[caitp (gmail), 2016/01/13 23:41:10]

done

+
 void ArrayBufferContents::freeMemory(void* data, size_t size)
 {
     Partitions::bufferFree(data);