reset shader compilations for stats

bench/SKPBench.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SKPBench.h"
 #include "SkCommandLineFlags.h"
 #include "SkMultiPictureDraw.h"
@@ skipping 139 matching lines @@
                                                    -fTileRects[j].fTop / fScale);
         fSurfaces[j]->getCanvas()->drawPicture(fPic, &trans, nullptr);
     }
 
     for (int j = 0; j < fTileRects.count(); ++j) {
         fSurfaces[j]->getCanvas()->flush();
     }
 }
 
 #if SK_SUPPORT_GPU
+#include "GrGpu.h"
 static void draw_pic_for_stats(SkCanvas* canvas, GrContext* context, const SkPicture* picture,
                                SkTArray<SkString>* keys, SkTArray<double>* values,
                                const char* tag) {
     context->resetGpuStats();
     canvas->drawPicture(picture);
     canvas->flush();
 
     int offset = keys->count();
     context->dumpGpuStatsKeyValuePairs(keys, values);
 
     // append tag, but only to new tags
     for (int i = offset; i < keys->count(); i++, offset++) {
         (*keys)[i].appendf("_%s", tag);
     }
 }
 #endif
 
 void SKPBench::getGpuStats(SkCanvas* canvas, SkTArray<SkString>* keys, SkTArray<double>* values) {
 #if SK_SUPPORT_GPU
     // we do a special single draw and then dump the key / value pairs
     GrContext* context = canvas->getGrContext();
     if (!context) {
         return;
     }
 
     // TODO refactor this out if we want to test other subclasses of skpbench
     context->flush();
     context->freeGpuResources();
     context->resetContext();
+    context->getGpu()->resetShaderCacheForTesting();
     draw_pic_for_stats(canvas, context, fPic, keys, values, "first_frame");
 
     // draw second frame
     draw_pic_for_stats(canvas, context, fPic, keys, values, "second_frame");
 
 #endif
 }