Use SkDebugf to print when GrContext can't be created for a config.

bench/benchmain.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 "BenchTimer.h"
 #include "ResultsWriter.h"
 #include "SkBenchLogger.h"
@@ skipping 350 matching lines @@
         SkBenchmark::SetResourcePath(FLAGS_resourcePath[0]);
     }
 
 #if SK_SUPPORT_GPU
     for (int i = 0; i < configs.count(); ++i) {
         const Config& config = gConfigs[configs[i]];
 
         if (SkBenchmark::kGPU_Backend == config.backend) {
             GrContext* context = gContextFactory.get(config.contextType);
             if (NULL == context) {
-                logger.logError(SkStringPrintf(
-                    "Error creating GrContext for config %s. Config will be skipped.\n",
-                    config.name));
+                SkDebugf("GrContext could not be created for config %s. Config will be skipped.\n",
+                    config.name);
                 configs.remove(i);
                 --i;
                 continue;
             }
             if (config.sampleCount > context->getMaxSampleCount()){
-                logger.logError(SkStringPrintf(
-                    "Sample count (%d) for config %s is unsupported. Config will be skipped.\n",
-                    config.sampleCount, config.name));
+                SkDebugf(
+                    "Sample count (%d) for config %s is not supported. Config will be skipped.\n",
+                    config.sampleCount, config.name);
                 configs.remove(i);
                 --i;
                 continue;
             }
         }
     }
 #endif
 
     // All flags should be parsed now.  Report our settings.
     if (FLAGS_runOnce) {
@@ skipping 307 matching lines @@
     gContextFactory.destroyContexts();
 #endif
     return 0;
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif