Remove some unused ui/gfx code.

shell/desktop/mojo_main.cc

 // Copyright 2013 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.
 
 #include <algorithm>
 #include <iostream>
 
 #include "base/at_exit.h"
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "shell/child_process.h"
 #include "shell/command_line_util.h"
 #include "shell/context.h"
 #include "shell/init.h"
 #include "shell/switches.h"
 
 namespace {
 
-#if defined(OS_LINUX)
-// Copied from ui/gfx/switches.cc to avoid a dependency on //ui/gfx
-const char kEnableHarfBuzzRenderText[] = "enable-harfbuzz-rendertext";
-#endif
-
 void Usage() {
   std::cerr << "Launch Mojo applications.\n";
   std::cerr
       << "Usage: mojo_shell"
       << " [--" << switches::kArgsFor << "=<mojo-app>]"
       << " [--" << switches::kContentHandlers << "=<handlers>]"
       << " [--" << switches::kEnableExternalApplications << "]"
       << " [--" << switches::kDisableCache << "]"
       << " [--" << switches::kEnableMultiprocess << "]"
       << " [--" << switches::kOrigin << "=<url-lib-path>]"
@@ skipping 38 matching lines @@
     }
 
     if (found_unknown_switch ||
         (!command_line.HasSwitch(switches::kEnableExternalApplications) &&
          (command_line.HasSwitch(switches::kHelp) ||
           command_line.GetArgs().empty()))) {
       Usage();
       return 0;
     }
 
-#if defined(OS_LINUX)
-    // We use gfx::RenderText from multiple threads concurrently and the pango
-    // backend (currently the default on linux) is not close to threadsafe.
-    // Force use of the harfbuzz backend for now.
-    base::CommandLine::ForCurrentProcess()->AppendSwitch(
-        kEnableHarfBuzzRenderText);
-#endif
-
     // We want the shell::Context to outlive the MessageLoop so that pipes are
     // all gracefully closed / error-out before we try to shut the Context down.
     mojo::shell::Context shell_context;
     {
       base::MessageLoop message_loop;
       if (!shell_context.Init()) {
         Usage();
         return 0;
       }
 
       // The mojo_shell --args-for command-line switch is handled specially
       // because it can appear more than once. The base::CommandLine class
       // collapses multiple occurrences of the same switch.
       for (int i = 1; i < argc; i++) {
         ApplyApplicationArgs(&shell_context, argv[i]);
       }
 
       message_loop.PostTask(
           FROM_HERE,
           base::Bind(&mojo::shell::RunCommandLineApps, &shell_context));
       message_loop.Run();
 
       // Must be called before |message_loop| is destroyed.
       shell_context.Shutdown();
     }
   }
   return 0;
 }