GrBufferAllocPool: use _throw calloc() if unchecked.

src/gpu/GrBufferAllocPool.cpp

Index: src/gpu/GrBufferAllocPool.cpp
diff --git a/src/gpu/GrBufferAllocPool.cpp b/src/gpu/GrBufferAllocPool.cpp
index d19604c718ca7ad86f71c3550122d9bb8781384b..bb73a101eec20837758234f3f97ad1bc36696468 100644
--- a/src/gpu/GrBufferAllocPool.cpp
+++ b/src/gpu/GrBufferAllocPool.cpp
@@ -281,7 +281,7 @@ void* GrBufferAllocPool::resetCpuData(size_t newSize) {
     sk_free(fCpuData);
     if (newSize) {
         if (fGpu->caps()->mustClearUploadedBufferData()) {
-            fCpuData = sk_calloc(newSize);
+            fCpuData = sk_calloc_throw(newSize);
         } else {
             fCpuData = sk_malloc_throw(newSize);
         }