Add caps overrides to GMs

gm/textblobuseaftergpufree.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 
 #if SK_SUPPORT_GPU
 
 #include "SkCanvas.h"
 #include "SkSurface.h"
 #include "SkTextBlob.h"
+#include "GrContext.h"
 
 // This tests that we correctly regenerate textblobs after freeing all gpu resources crbug/491350
 namespace skiagm {
 class TextBlobUseAfterGpuFree : public GM {
 public:
     TextBlobUseAfterGpuFree() { }
 
 protected:
     SkString onShortName() override {
         return SkString("textblobuseaftergpufree");
@@ skipping 39 matching lines @@
     static const int kHeight = 200;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return SkNEW(TextBlobUseAfterGpuFree); )
 }
 #endif