base: Use stl utilities from the base namespace

base/debug/activity_analyzer.cc

 // Copyright 2016 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/debug/activity_analyzer.h"
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/memory_mapped_file.h"
 #include "base/logging.h"
@@ skipping 101 matching lines @@
     // Create the analyzer on the data. This will capture a snapshot of the
     // tracker state. This can fail if the tracker is somehow corrupted or is
     // in the process of shutting down.
     std::unique_ptr<ThreadActivityAnalyzer> analyzer(new ThreadActivityAnalyzer(
         base, allocator_->GetAllocSize(tracker_ref)));
     if (!analyzer->IsValid())
       continue;
 
     // Add this analyzer to the map of known ones, indexed by a unique thread
     // identifier.
-    DCHECK(!ContainsKey(analyzers_, analyzer->GetThreadKey()));
+    DCHECK(!base::ContainsKey(analyzers_, analyzer->GetThreadKey()));
     analyzer->allocator_reference_ = ref;
     analyzers_[analyzer->GetThreadKey()] = std::move(analyzer);
   }
 }
 
 }  // namespace debug
 }  // namespace base