Add Gpu Tracing to Ganesh

include/gpu/GrContext.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrContext_DEFINED
 #define GrContext_DEFINED
 
@@ skipping 842 matching lines @@
     // Functions intended for internal use only.
     GrGpu* getGpu() { return fGpu; }
     const GrGpu* getGpu() const { return fGpu; }
     GrFontCache* getFontCache() { return fFontCache; }
     GrDrawTarget* getTextTarget();
     const GrIndexBuffer* getQuadIndexBuffer() const;
 
     // Called by tests that draw directly to the context via GrDrawTarget
     void getTestTarget(GrTestTarget*);
 
+    // Functions for managing gpu trace markers
+    bool isGpuTracingEnabled() const { return fGpuTracingEnabled; }
+    void enableGpuTracing() { fGpuTracingEnabled = true; }
+    void disableGpuTracing() { fGpuTracingEnabled = false; }
+
     /**
      * Stencil buffers add themselves to the cache using addStencilBuffer. findStencilBuffer is
      * called to check the cache for a SB that matches an RT's criteria.
      */
     void addStencilBuffer(GrStencilBuffer* sb);
     GrStencilBuffer* findStencilBuffer(int width, int height, int sampleCnt);
 
     GrPathRenderer* getPathRenderer(
                     const SkPath& path,
                     const SkStrokeRec& stroke,
@@ skipping 43 matching lines @@
 
     struct CleanUpData {
         PFCleanUpFunc fFunc;
         void*         fInfo;
     };
 
     SkTDArray<CleanUpData>          fCleanUpData;
 
     int                             fMaxTextureSizeOverride;
 
+    bool                            fGpuTracingEnabled;
+
     GrContext(); // init must be called after the constructor.
     bool init(GrBackend, GrBackendContext);
 
     void setupDrawBuffer();
 
     class AutoRestoreEffects;
     class AutoCheckFlush;
     /// Sets the paint and returns the target to draw into. The paint can be NULL in which case the
     /// draw state is left unmodified.
     GrDrawTarget* prepareToDraw(const GrPaint*, BufferedDraw, AutoRestoreEffects*, AutoCheckFlush*);
@@ skipping 126 matching lines @@
     }
 
     GrTexture* texture() { return fTexture; }
 
 private:
     GrContext*                    fContext;
     GrTexture*                    fTexture;
 };
 
 #endif