More framework support for TransferBuffers

include/gpu/GrTypesPriv.h

Index: include/gpu/GrTypesPriv.h
diff --git a/include/gpu/GrTypesPriv.h b/include/gpu/GrTypesPriv.h
index 6135c14c12198232b67e41dbc7ea63545a278634..3d45c173ece2c2504e35d2307f01bc33ce63b77b 100644
--- a/include/gpu/GrTypesPriv.h
+++ b/include/gpu/GrTypesPriv.h
@@ -267,6 +267,17 @@ private:
     SkIRect fRect;
 };
 
+/**
+* Indicates the transfer direction for a transfer buffer

[bsalomon, 2016/01/05 14:01:17]

nit the single *s should be one space out to align with the first * in /**

[jvanverth1, 2016/01/05 17:21:28]

Done.

+*/
+enum TransferType {
+    /** Caller intends to use the buffer to transfer data to the GPU */
+    kCpuToGpu_TransferType,
+    /** Caller intends to use the buffer to transfer data from the GPU */
+    kGpuToCpu_TransferType
+};
+
+
 #ifdef SK_DEBUG
 // Takes a pointer to a GrCaps, and will suppress prints if required
 #define GrCapsDebugf(caps, ...)         \