Remove a bunch of dead fields found by Scythe.

media/tools/tile_render_bench/tile_render_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 technique of using tiles to render a
 // large tecture. This tool runs with different tile sizes so that developer
 // can determine the right dimensions for the tiles.
 
 #include <iostream>
 
@@ skipping 17 matching lines @@
 
 // Factor for dividing the size from one step to another.
 static const int kSizeFactor = 2;
 
 // Number of renders before we output.
 static const int kRenderCount = 1000;
 static const int kMaxTextures = kStartSize * kStartSize / kEndSize / kEndSize;
 
 Display* g_display = NULL;
 Window g_window = 0;
-bool g_running = false;
 GLXContext g_gl_context = NULL;
 GLuint g_textures[kMaxTextures];
 scoped_array<uint8> g_image;
 
 // Initialize X11. Returns true if successful. This method creates the X11
 // window. Further initialization is done in X11VideoRenderer.
 bool InitX11() {
   g_display = XOpenDisplay(NULL);
   if (!g_display) {
     std::cout << "Error - cannot open display" << std::endl;
@@ skipping 187 matching lines @@
 
   // Cleanup GL.
   glXMakeCurrent(g_display, 0, NULL);
   glXDestroyContext(g_display, g_gl_context);
 
   // Destroy window and display.
   XDestroyWindow(g_display, g_window);
   XCloseDisplay(g_display);
   return 0;
 }