Cleanup: Go with SkDebugf instead of GrPrintf.

src/gpu/gl/GrGLUtil.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLUtil.h"
 #include "SkMatrix.h"
@@ skipping 21 matching lines @@
     }
     return "Unknown";
 }
 }
 
 void GrGLCheckErr(const GrGLInterface* gl,
                   const char* location,
                   const char* call) {
     uint32_t err = GR_GL_GET_ERROR(gl);
     if (GR_GL_NO_ERROR != err) {
-        GrPrintf("---- glGetError 0x%x(%s)", err, get_error_string(err));
+        SkDebugf("---- glGetError 0x%x(%s)", err, get_error_string(err));
         if (location) {
-            GrPrintf(" at\n\t%s", location);
+            SkDebugf(" at\n\t%s", location);
         }
         if (call) {
-            GrPrintf("\n\t\t%s", call);
+            SkDebugf("\n\t\t%s", call);
         }
-        GrPrintf("\n");
+        SkDebugf("\n");
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #if GR_GL_LOG_CALLS
     bool gLogCallsGL = !!(GR_GL_LOG_CALLS_START);
 #endif
 
 #if GR_GL_CHECK_ERROR
@@ skipping 222 matching lines @@
     GR_STATIC_ASSERT(2 == kGreater_StencilFunc);
     GR_STATIC_ASSERT(3 == kGEqual_StencilFunc);
     GR_STATIC_ASSERT(4 == kLess_StencilFunc);
     GR_STATIC_ASSERT(5 == kLEqual_StencilFunc);
     GR_STATIC_ASSERT(6 == kEqual_StencilFunc);
     GR_STATIC_ASSERT(7 == kNotEqual_StencilFunc);
     SkASSERT((unsigned) basicFunc < kBasicStencilFuncCount);
 
     return gTable[basicFunc];
 }