Fix divide-by-zero in program cache tracking

src/gpu/gl/GrGpuGL.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
 #ifndef GrGpuGL_DEFINED
 #define GrGpuGL_DEFINED
 
 
 #include "GrBinHashKey.h"
 #include "GrDrawState.h"
 #include "GrGpu.h"
 #include "GrGLContext.h"
 #include "GrGLIndexBuffer.h"
 #include "GrGLIRect.h"
 #include "GrGLProgram.h"
 #include "GrGLStencilBuffer.h"
 #include "GrGLTexture.h"
 #include "GrGLVertexArray.h"
 #include "GrGLVertexBuffer.h"
 #include "../GrTHashCache.h"
 
-#ifdef SK_DEBUG
+#ifdef SK_DEVELOPER
 #define PROGRAM_CACHE_STATS
 #endif
 
 class GrGpuGL : public GrGpu {
 public:
     GrGpuGL(const GrGLContext& ctx, GrContext* context);
     virtual ~GrGpuGL();
 
     const GrGLInterface* glInterface() const { return fGLContext.interface(); }
     GrGLBinding glBinding() const { return fGLContext.info().binding(); }
@@ skipping 392 matching lines @@
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     bool fPrintedCaps;
 
     typedef GrGpu INHERITED;
 };
 
 #endif