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

chrome/browser/password_manager/password_generation_interactive_uitest.cc

 // Copyright 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 "base/command_line.h"
 #include "chrome/browser/password_manager/chrome_password_manager_client.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/autofill/password_generation_popup_observer.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 30 matching lines @@
 
  private:
   bool popup_showing_;
   bool password_visible_;
 };
 
 }  // namespace
 
 class PasswordGenerationInteractiveTest : public InProcessBrowserTest {
  public:
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     // Make sure the feature is enabled.
     command_line->AppendSwitch(autofill::switches::kEnablePasswordGeneration);
 
     // Don't require ping from autofill or blacklist checking.
     command_line->AppendSwitch(
         autofill::switches::kLocalHeuristicsOnlyForPasswordGeneration);
   }
 
   void SetUpOnMainThread() override {
     // Disable Autofill requesting access to AddressBook data. This will cause
@@ skipping 120 matching lines @@
 IN_PROC_BROWSER_TEST_F(PasswordGenerationInteractiveTest,
                        MAYBE_PopupShownAndDismissedByScrolling) {
   FocusPasswordField();
   EXPECT_TRUE(GenerationPopupShowing());
 
   ASSERT_TRUE(content::ExecuteScript(GetRenderViewHost(),
                                      "window.scrollTo(100, 0);"));
 
   EXPECT_FALSE(GenerationPopupShowing());
 }