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

ui/app_list/views/apps_grid_view_unittest.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/app_list/views/apps_grid_view.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
@@ skipping 90 matching lines @@
     test_api_.reset(new AppsGridViewTestApi(apps_grid_view_.get()));
   }
   void TearDown() override {
     apps_grid_view_.reset();  // Release apps grid view before models.
     views::ViewsTestBase::TearDown();
   }
 
  protected:
   void EnsureFoldersEnabled() {
     // Folders require AppList sync to be enabled.
-    CommandLine::ForCurrentProcess()->AppendSwitch(
+    base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kEnableSyncAppList);
   }
 
   AppListItemView* GetItemViewAt(int index) {
     return static_cast<AppListItemView*>(
         test_api_->GetViewAtModelIndex(index));
   }
 
   AppListItemView* GetItemViewForPoint(const gfx::Point& point) {
     for (size_t i = 0; i < model_->top_level_item_list()->item_count(); ++i) {
@@ skipping 660 matching lines @@
   AppListItemView* item_view = GetItemViewAt(0);
   ASSERT_TRUE(item_view);
   const views::Label* title_label = item_view->title();
   EXPECT_FALSE(title_label->GetTooltipText(
       title_label->bounds().CenterPoint(), &actual_tooltip));
   EXPECT_EQ(title, base::UTF16ToUTF8(title_label->text()));
 }
 
 }  // namespace test
 }  // namespace app_list