[tracing] Add names to memory-infra dumpers for debugging

base/trace_event/memory_dump_manager.h

 // 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.
 
 #ifndef BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_
 #define BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_
 
 #include <set>
 
 #include "base/atomicops.h"
@@ skipping 51 matching lines @@
   //  - name: a friendly name (duplicates allowed). Used for debugging and
   //      run-time profiling of memory-infra internals. Must be a long-lived
   //      C string.
   //  - task_runner: (optional) if non-null, all the calls to the |mdp| will be
   //      issued on the given thread. Otherwise, the |mdp| should be able to
   //      handle calls on arbitrary threads.
   void RegisterDumpProvider(
       MemoryDumpProvider* mdp,
       const char* name,
       const scoped_refptr<SingleThreadTaskRunner>& task_runner);
-  void RegisterDumpProvider(MemoryDumpProvider* mdp);
-
-  // TODO(primiano): remove this one after all the existing dump provider have
-  // been converted.
-  void RegisterDumpProvider(
-      MemoryDumpProvider* mdp,
-      const scoped_refptr<SingleThreadTaskRunner>& task_runner);
+  void RegisterDumpProvider(MemoryDumpProvider* mdp, const char* name);
   void UnregisterDumpProvider(MemoryDumpProvider* mdp);
 
   // Requests a memory dump. The dump might happen or not depending on the
   // filters and categories specified when enabling tracing.
   // The optional |callback| is executed asynchronously, on an arbitrary thread,
   // to notify about the completion of the global dump (i.e. after all the
   // processes have dumped) and its success (true iff all the dumps were
   // successful).
   void RequestGlobalDump(MemoryDumpType dump_type,
                          MemoryDumpLevelOfDetail level_of_detail,
@@ skipping 185 matching lines @@
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MemoryDumpManagerDelegate);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_