Replace uses of hash_map in //base

base/tracked_objects.h

 // 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.
 
 #ifndef BASE_TRACKED_OBJECTS_H_
 #define BASE_TRACKED_OBJECTS_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <set>
 #include <stack>
 #include <string>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
 #include "base/allocator/features.h"
 #include "base/atomicops.h"
 #include "base/base_export.h"
 #include "base/containers/hash_tables.h"
 #include "base/debug/debugging_flags.h"
 #include "base/debug/thread_heap_usage_tracker.h"
 #include "base/gtest_prod_util.h"
@@ skipping 491 matching lines @@
   // Current allowable states of the tracking system.  The states can vary
   // between ACTIVE and DEACTIVATED, but can never go back to UNINITIALIZED.
   enum Status {
     UNINITIALIZED,         // Pristine, link-time state before running.
     DORMANT_DURING_TESTS,  // Only used during testing.
     DEACTIVATED,           // No longer recording profiling.
     PROFILING_ACTIVE,      // Recording profiles.
     STATUS_LAST = PROFILING_ACTIVE
   };
 
-  typedef base::hash_map<Location, Births*, Location::Hash> BirthMap;
+  typedef std::unordered_map<Location, Births*, Location::Hash> BirthMap;
   typedef std::map<const Births*, DeathData> DeathMap;
 
   // Initialize the current thread context with a new instance of ThreadData.
   // This is used by all threads that have names, and should be explicitly
   // set *before* any births on the threads have taken place.
   static void InitializeThreadContext(const std::string& thread_name);
 
   // Using Thread Local Store, find the current instance for collecting data.
   // If an instance does not exist, construct one (and remember it for use on
   // this thread.
@@ skipping 353 matching lines @@
   ProcessDataSnapshot(const ProcessDataSnapshot& other);
   ~ProcessDataSnapshot();
 
   PhasedProcessDataSnapshotMap phased_snapshots;
   base::ProcessId process_id;
 };
 
 }  // namespace tracked_objects
 
 #endif  // BASE_TRACKED_OBJECTS_H_