Add module suffix in .mojom files for components/arc

components/arc/common/process.mojom

 // 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.
 //
 // Next MinVersion: 3
 
-module arc;
+module arc.mojom;
 
 // Describes the current process state, as defined by AOSP in
 // android.app.ActivityManager.
 enum ProcessState {
   // Process does not exist.
   NONEXISTENT = -1,
 
   // Process is a persistent system process.
   PERSISTENT = 0,
 
@@ skipping 79 matching lines @@
   // Set oom_score_adj of a process.
   [MinVersion=2]
   SetOomScoreAdj(uint32 pid, int32 score);
 
   // Disable android built-in oom_adj adjustment.
   // After calling this method, Chrome will take over OOM scores management,
   // namely oom_score_adj settings.
   [MinVersion=2]
   DisableBuiltinOomAdjustment();
 };