Add a parameter GR_ALWAYS_ALLOCATE_ON_HEAP to allow for only ever creating temporary buffers on the…

include/gpu/GrTypes.h

Index: include/gpu/GrTypes.h
diff --git a/include/gpu/GrTypes.h b/include/gpu/GrTypes.h
index 41cc7eab79171c422ab84de8ad0233a8d8bf324e..22b2e224f6edd3dbe513adb6215d1502d569403a 100644
--- a/include/gpu/GrTypes.h
+++ b/include/gpu/GrTypes.h
@@ -708,4 +708,20 @@ static const uint32_t kAll_GrBackendState = 0xffffffff;
 
 ///////////////////////////////////////////////////////////////////////////////
 
+#if GR_ALWAYS_ALLOCATE_ON_HEAP
+    #define GrAutoMallocBaseType SkAutoMalloc
+#else
+    #define GrAutoMallocBaseType SkAutoSMalloc<S>
+#endif
+
+template <size_t S> class GrAutoMalloc : public GrAutoMallocBaseType {
+public:
+    GrAutoMalloc() : INHERITED() {}
+    explicit GrAutoMalloc(size_t size) : INHERITED(size) {}
+    virtual ~GrAutoMalloc() {}
+private:
+    typedef GrAutoMallocBaseType INHERITED;
+};
+
+#undef GrAutoMallocBaseType
 #endif