Move PathExists to base namespace.

gpu/tools/compositor_model_bench/compositor_model_bench.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This tool is used to benchmark the render model used by the compositor
 
 // Most of this file is derived from the source of the tile_render_bench tool,
 // and has been changed to  support running a sequence of independent
 // simulations for our different render models and test cases.
 
@@ skipping 23 matching lines @@
 
 #include "gpu/tools/compositor_model_bench/render_model_utils.h"
 #include "gpu/tools/compositor_model_bench/render_models.h"
 #include "gpu/tools/compositor_model_bench/render_tree.h"
 
 
 using base::TimeTicks;
 using file_util::CloseFile;
 using file_util::DirectoryExists;
 using file_util::OpenFile;
-using file_util::PathExists;
+using base::PathExists;
 using std::queue;
 using std::string;
 
 struct SimulationSpecification {
   string simulation_name;
   base::FilePath input_path;
   RenderModel model_under_test;
   TimeTicks simulation_start_time;
   int frames_rendered;
 };
@@ skipping 340 matching lines @@
     }
   } else {
     LOG(INFO) << "(input path is a file)";
     sim.QueueTest(inPath);
   }
 
   sim.Run();
 
   return 0;
 }