content: Fix trace category in HostDiscardableSharedMemoryManager.

content/common/host_discardable_shared_memory_manager.cc

 // Copyright 2014 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 "content/common/host_discardable_shared_memory_manager.h"
 
 #include <algorithm>
 
 #include "base/callback.h"
 #include "base/debug/crash_logging.h"
@@ skipping 211 matching lines @@
     segments_.push_back(segment);
     std::push_heap(segments_.begin(), segments_.end(), CompareMemoryUsageTime);
   }
 
   if (bytes_allocated_ != bytes_allocated_before_purging)
     BytesAllocatedChanged(bytes_allocated_);
 }
 
 void HostDiscardableSharedMemoryManager::BytesAllocatedChanged(
     size_t new_bytes_allocated) const {
-  TRACE_COUNTER_ID1(
-      "base", "TotalDiscardableMemoryUsage", this, new_bytes_allocated);
+  TRACE_COUNTER_ID1("renderer_host", "TotalDiscardableMemoryUsage", this,
+                    new_bytes_allocated);
 
   static const char kTotalDiscardableMemoryUsageKey[] = "total-dm-usage";
   base::debug::SetCrashKeyValue(kTotalDiscardableMemoryUsageKey,
                                 base::Uint64ToString(new_bytes_allocated));
 }
 
 base::Time HostDiscardableSharedMemoryManager::Now() const {
   return base::Time::Now();
 }
 
 void HostDiscardableSharedMemoryManager::ScheduleEnforceMemoryPolicy() {
   if (enforce_memory_policy_pending_)
     return;
 
   enforce_memory_policy_pending_ = true;
   base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&HostDiscardableSharedMemoryManager::EnforceMemoryPolicy,
                  weak_ptr_factory_.GetWeakPtr()),
       base::TimeDelta::FromMilliseconds(kEnforceMemoryPolicyDelayMs));
 }
 
 }  // namespace content