rename GrTextureDesc->GrSurfaceDesc, GrTextureFlags->GrSurfaceFlags

Review URL: https://codereview.chromium.org/682223002
diff --git a/src/gpu/GrDistanceFieldTextContext.cpp b/src/gpu/GrDistanceFieldTextContext.cpp
index 118565a..155f636 100755
--- a/src/gpu/GrDistanceFieldTextContext.cpp
+++ b/src/gpu/GrDistanceFieldTextContext.cpp
@@ -194,8 +194,8 @@
         SkScalerContext::GetGammaLUTData(contrast, paintGamma, deviceGamma, data.get());
 
         // TODO: Update this to use the cache rather than directly creating a texture.
-        GrTextureDesc desc;
-        desc.fFlags = kDynamicUpdate_GrTextureFlagBit;
+        GrSurfaceDesc desc;
+        desc.fFlags = kNone_GrSurfaceFlags;
         desc.fWidth = width;
         desc.fHeight = height;
         desc.fConfig = kAlpha_8_GrPixelConfig;