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

chrome/browser/predictors/autocomplete_action_predictor_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 "chrome/browser/predictors/autocomplete_action_predictor.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/guid.h"
 #include "base/memory/ref_counted.h"
@@ skipping 79 matching lines @@
         predictor_(new AutocompleteActionPredictor(profile_.get())) {
   }
 
   ~AutocompleteActionPredictorTest() override {
     predictor_.reset(NULL);
     profile_.reset(NULL);
     loop_.RunUntilIdle();
   }
 
   void SetUp() override {
-    CommandLine::ForCurrentProcess()->AppendSwitchASCII(
+    base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
         switches::kPrerenderFromOmnibox,
         switches::kPrerenderFromOmniboxSwitchValueEnabled);
 
     predictor_->CreateLocalCachesFromDatabase();
     ASSERT_TRUE(profile_->CreateHistoryService(true, false));
     profile_->BlockUntilHistoryProcessesPendingRequests();
 
     ASSERT_TRUE(predictor_->initialized_);
     ASSERT_TRUE(db_cache()->empty());
     ASSERT_TRUE(db_id_cache()->empty());
@@ skipping 264 matching lines @@
          AutocompleteActionPredictor::ACTION_PRERENDER) ?
         AutocompleteActionPredictor::ACTION_PRECONNECT :
         test_url_db[i].expected_action;
     EXPECT_EQ(expected_action,
               predictor()->RecommendAction(test_url_db[i].user_text, match))
         << "Unexpected action for " << match.destination_url;
   }
 }
 
 }  // namespace predictors