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

content/browser/renderer_host/legacy_render_widget_host_win.cc

 // Copyright (c) 2014 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 "content/browser/renderer_host/legacy_render_widget_host_win.h"
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/win/windows_version.h"
 #include "content/browser/renderer_host/legacy_render_widget_host_win_delegate.h"
@@ skipping 21 matching lines @@
 
 LegacyRenderWidgetHostHWND::~LegacyRenderWidgetHostHWND() {
   if (::IsWindow(hwnd()))
     ::DestroyWindow(hwnd());
 }
 
 // static
 LegacyRenderWidgetHostHWND* LegacyRenderWidgetHostHWND::Create(
     HWND parent,
     LegacyRenderWidgetHostHWNDDelegate* delegate) {
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableLegacyIntermediateWindow)) {
     return nullptr;
   }
 
   LegacyRenderWidgetHostHWND* legacy_window_instance =
       new LegacyRenderWidgetHostHWND(parent, delegate);
   // If we failed to create the child, return NULL.
   if (!::IsWindow(legacy_window_instance->hwnd())) {
     delete legacy_window_instance;
     return nullptr;
@@ skipping 313 matching lines @@
   // generate the legacy WM_VSCROLL/WM_HSCROLL messages.
   // We add these styles to ensure that trackpad/trackpoint scrolling
   // work.
   long current_style = ::GetWindowLong(hwnd(), GWL_STYLE);
   ::SetWindowLong(hwnd(), GWL_STYLE,
                   current_style | WS_VSCROLL | WS_HSCROLL);
   return 0;
 }
 
 }  // namespace content