Make callers of CommandLine use it via the base:: namespace.

ui/gfx/font_render_params_linux.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.
 
 #include "ui/gfx/font_render_params.h"
 
 #include <fontconfig/fontconfig.h>
 
 #include "base/command_line.h"
 #include "base/containers/mru_cache.h"
@@ skipping 215 matching lines @@
     // less than that looks awful; do the same here. Requesting subpixel
     // rendering or positioning doesn't make sense either.
     params.hinting = FontRenderParams::HINTING_FULL;
     params.subpixel_rendering = FontRenderParams::SUBPIXEL_RENDERING_NONE;
     params.subpixel_positioning = false;
   } else {
     // Fontconfig doesn't support configuring subpixel positioning; check a
     // flag.
     params.subpixel_positioning =
         actual_query.for_web_contents
-            ? CommandLine::ForCurrentProcess()->HasSwitch(
+            ? base::CommandLine::ForCurrentProcess()->HasSwitch(
                   switches::kEnableWebkitTextSubpixelPositioning)
             : IsBrowserTextSubpixelPositioningEnabled(actual_query);
 
     // To enable subpixel positioning, we need to disable hinting.
     if (params.subpixel_positioning)
       params.hinting = FontRenderParams::HINTING_NONE;
   }
 
   // Use the first family from the list if Fontconfig didn't suggest a family.
   if (family_out && family_out->empty() && !actual_query.families.empty())
@@ skipping 20 matching lines @@
 float GetFontRenderParamsDeviceScaleFactor() {
   return device_scale_factor_for_internal_display;
 }
 
 void SetFontRenderParamsDeviceScaleFactor(float device_scale_factor) {
   device_scale_factor_for_internal_display = device_scale_factor;
 }
 #endif
 
 }  // namespace gfx