message: ProfileHandler: Remove unnecessary interface method.
diff: @@ -29,22 +29,6 @@ class ProfileHandler {
  ProfileHandler() {}
  virtual ~ProfileHandler() {}
  - // Records that a miscellaneous activity occurred in the current step.
  - //
  - // Implementations of this method must be thread-safe.
  - //
  - // Args:
  - // - device: The device on which the activity occurred.
  - // - start: The time at which the activity started.
  - // - limit: The time at which the activity finished.
  - // - label: A label for the op, which may be used in visualization.
  - // - op_type: A type string for the op, which may be used in visualization.
  - // - details: A details string, which may be used in visualization.
  - // from time "start" to "limit" with "op_type" and "details".
  - virtual void RecordActivity(const string& device, Microseconds start,
  - Microseconds limit, StringPiece label,
  - StringPiece op_type, StringPiece details) = 0;
  -
  // Records that a single Op was executed in the current step.
  //
  // Implementations of this method must be thread-safe.
  