Move part of metrics from chrome/common to components

components/metrics/proto/profiler_event.proto

 // 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.
 //
 // Performance metrics collected via Chrome's built-in profiler.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
@@ skipping 72 matching lines @@
       PPAPI_PLUGIN = 12;
       PPAPI_BROKER = 13;
     }
     optional ProcessType process_type = 11;
 
     // The local PID for the process within which this task was executed.
     optional uint32 process_id = 12;
   }
   repeated TrackedObject tracked_object = 3;
 }