Add stencil buffer create tracking to GPU stats.

src/gpu/GrClipMaskManager.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef GrClipMaskManager_DEFINED
 #define GrClipMaskManager_DEFINED
 
 #include "GrClipMaskCache.h"
@@ skipping 148 matching lines @@
                    GrTexture* srcMask,
                    SkRegion::Op op,
                    const SkIRect& dstBound,
                    const SkIRect& srcBound);
 
     GrTexture* createTempMask(int width, int height);
 
     void setupCache(const SkClipStack& clip,
                     const SkIRect& bounds);
     /**
-     * Called prior to return control back the GrGpu in setupClipping. It
-     * updates the GrGpu with stencil settings that account stencil-based
-     * clipping.
+     * Called prior to return control back the GrGpu in setupClipping. It updates the
+     * GrPipelineBuilder with stencil settings that account for stencil-based clipping.
      */
     void setPipelineBuilderStencil(GrPipelineBuilder*, GrPipelineBuilder::AutoRestoreStencil*);
 
     /**
      * Adjusts the stencil settings to account for interaction with stencil
      * clipping.
      */
     void adjustStencilParams(GrStencilSettings* settings,
                              StencilClipMode mode,
                              int stencilBitCnt);
 
     /**
      * We may represent the clip as a mask in the stencil buffer or as an alpha
      * texture. It may be neither because the scissor rect suffices or we
      * haven't yet examined the clip.
      */
     enum ClipMaskType {
         kNone_ClipMaskType,
         kStencil_ClipMaskType,
         kAlpha_ClipMaskType,
     } fCurrClipMaskType;
 
     GrClipMaskCache fAACache;       // cache for the AA path
     GrClipTarget*   fClipTarget;
     StencilClipMode fClipMode;
 
     typedef SkNoncopyable INHERITED;
 };
 #endif // GrClipMaskManager_DEFINED