Spin off incidental changes from DM CL (22839016).

BUG=
R=epoger@google.com, bsalomon@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/27023004

git-svn-id: http://skia.googlecode.com/svn/trunk@11752 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/texdata.cpp b/gm/texdata.cpp
index 8ba0c77..645ced1 100644
--- a/gm/texdata.cpp
+++ b/gm/texdata.cpp
@@ -35,6 +35,8 @@
         return make_isize(2*S, 2*S);
     }
 
+    virtual uint32_t onGetFlags() const SK_OVERRIDE { return kGPUOnly_Flag; }
+
     virtual void onDraw(SkCanvas* canvas) {
         SkBaseDevice* device = canvas->getTopDevice();
         GrRenderTarget* target = device->accessRenderTarget();