Replace uses of hash_map in //base

third_party/WebKit/Source/platform/instrumentation/tracing/web_process_memory_dump.cc

 // Copyright 2015 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 "platform/instrumentation/tracing/web_process_memory_dump.h"
 
 #include "base/memory/discardable_memory.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/heap_profiler_heap_dump_writer.h"
@@ skipping 157 matching lines @@
 WebProcessMemoryDump::CreateDiscardableMemoryAllocatorDump(
     const std::string& name,
     base::DiscardableMemory* discardable) {
   base::trace_event::MemoryAllocatorDump* dump =
       discardable->CreateMemoryAllocatorDump(name.c_str(),
                                              process_memory_dump_);
   return CreateWebMemoryAllocatorDump(dump);
 }
 
 void WebProcessMemoryDump::DumpHeapUsage(
-    const base::hash_map<base::trace_event::AllocationContext,
-                         base::trace_event::AllocationMetrics>&
+    const std::unordered_map<base::trace_event::AllocationContext,
+                             base::trace_event::AllocationMetrics>&
         metrics_by_context,
     base::trace_event::TraceEventMemoryOverhead& overhead,
     const char* allocator_name) {
   process_memory_dump_->DumpHeapUsage(metrics_by_context, overhead,
                                       allocator_name);
 }
 
 }  // namespace content