content: Crash key and trace counter cleanup.

content/child/child_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/child/child_discardable_shared_memory_manager.h"
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/debug/crash_logging.h"
 #include "base/memory/discardable_memory.h"
@@ skipping 264 matching lines @@
     DiscardableSharedMemoryId id) {
   sender_->Send(new ChildProcessHostMsg_DeletedDiscardableSharedMemory(id));
 }
 
 void ChildDiscardableSharedMemoryManager::MemoryUsageChanged(
     size_t new_bytes_total,
     size_t new_bytes_free) const {
   TRACE_COUNTER2("renderer", "DiscardableMemoryUsage", "allocated",
                  new_bytes_total - new_bytes_free, "free", new_bytes_free);
 
-  static const char kDiscardableMemoryUsageKey[] = "dm-usage";
-  base::debug::SetCrashKeyValue(kDiscardableMemoryUsageKey,
+  static const char kDiscardableMemoryAllocatedKey[] =
+      "discardable-memory-allocated";
+  base::debug::SetCrashKeyValue(kDiscardableMemoryAllocatedKey,
                                 base::Uint64ToString(new_bytes_total));
 
-  static const char kDiscardableMemoryUsageFreeKey[] = "dm-usage-free";
-  base::debug::SetCrashKeyValue(kDiscardableMemoryUsageFreeKey,
+  static const char kDiscardableMemoryFreeKey[] = "discardable-memory-free";
+  base::debug::SetCrashKeyValue(kDiscardableMemoryFreeKey,
                                 base::Uint64ToString(new_bytes_free));
 }
 
 }  // namespace content