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

content/test/content_test_launcher.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 "content/public/test/test_launcher.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/i18n/icu_util.h"
@@ skipping 85 matching lines @@
 class ContentTestLauncherDelegate : public TestLauncherDelegate {
  public:
   ContentTestLauncherDelegate() {}
   ~ContentTestLauncherDelegate() override {}
 
   int RunTestSuite(int argc, char** argv) override {
     return ContentBrowserTestSuite(argc, argv).Run();
   }
 
   bool AdjustChildProcessCommandLine(
-      CommandLine* command_line,
+      base::CommandLine* command_line,
       const base::FilePath& temp_data_dir) override {
     command_line->AppendSwitchPath(switches::kContentShellDataPath,
                                    temp_data_dir);
     command_line->AppendSwitch(switches::kUseFakeDeviceForMediaStream);
     command_line->AppendSwitch(switches::kUseFakeUIForMediaStream);
     return true;
   }
 
  protected:
   ContentMainDelegate* CreateContentMainDelegate() override {
     return new ShellMainDelegate();
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ContentTestLauncherDelegate);
 };
 
 }  // namespace content
 
 int main(int argc, char** argv) {
   int default_jobs = std::max(1, base::SysInfo::NumberOfProcessors() / 2);
   content::ContentTestLauncherDelegate launcher_delegate;
   return LaunchTests(&launcher_delegate, default_jobs, argc, argv);
 }