SkPictureAnalyzer: expose the number of slow GPU commands.

include/core/SkPictureAnalyzer.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPictureAnalyzer_DEFINED
 #define SkPictureAnalyzer_DEFINED
 
@@ skipping 30 matching lines @@
     /**
      *  Reset all accumulated stats.
      */
     void reset();
 
     /**
      *  Returns true if the analyzed pictures are suitable for rendering on the GPU.
      */
     bool suitableForGpuRasterization(const char** whyNot = nullptr) const;
 
+    /**
+     * Returns the number of commands which are slow to draw on the GPU, capped at the predicate
+     * max.
+     */
+    uint32_t numSlowGpuCommands() { return fNumSlowPaths; }
+
 private:
     uint32_t fNumSlowPaths;
 
     typedef SkNoncopyable INHERITED;
 };
 
 #endif // SK_SUPPORT_GPU
 
 #endif // SkPictureAnalyzer_DEFINED