fix warnings when running a no gpu build

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.
  */
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
@@ skipping 628 matching lines @@
                 // Stop truncated timers before GL calls complete, and stop the full timers after.
                 timer.truncatedEnd();
 #if SK_SUPPORT_GPU
                 if (NULL != glContext) {
                     context->flush();
                     SK_GL(*glContext, Finish());
                 }
 #endif
                 timer.end();
 
-#if SK_SUPPORT_GPU
-                // currently we only setup the frame interval for the GPU
-                if (!frameIntervalComputed && NULL != glContext) {
+                // setup the frame interval for subsequent iterations
+                if (!frameIntervalComputed) {
                     frameIntervalTime += timer.fWall;
                     frameIntervalTotalLoops += loopsPerIter;
                     if (frameIntervalTime >= FLAGS_minMs) {
                         frameIntervalComputed = true;
                         loopsPerFrame =
                           (int)(((double)frameIntervalTotalLoops / frameIntervalTime) * FLAGS_minMs);
                         if (loopsPerFrame < 1) {
                             loopsPerFrame = 1;
                         }
 //                        SkDebugf("  %s has %d loops in %f ms (normalized to %d)\n",
 //                                 bench->getName(), frameIntervalTotalLoops,
 //                                 timer.fWall, loopsPerFrame);
                     }
                 }
-#endif
+
                 const double current = timer.fWall / loopsPerIter;
                 if (FLAGS_verbose && current > previous) { SkDebugf("↑"); }
                 if (FLAGS_verbose) { SkDebugf("%.3g ", current); }
                 converged = HasConverged(previous, current, timer.fWall);
                 previous = current;
             } while (!kIsDebug && !converged);
             if (FLAGS_verbose) { SkDebugf("\n"); }
 
             if (FLAGS_outDir.count() && kNonRendering_Backend != config.backend) {
                 saveFile(bench->getName(),
@@ skipping 35 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