Rationalize WakeLock naming conventions

device/wake_lock/public/interfaces/wake_lock_context.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.
 
 module device.mojom;
 
-import "device/wake_lock/public/interfaces/wake_lock_service.mojom";
+import "device/wake_lock/public/interfaces/wake_lock.mojom";
 
 enum WakeLockType {
     // Prevent the application from being suspended. On some platforms, apps may
     // be suspended when they are not visible to the user. This type of block
     // requests that the app continue to run in that case, and on all platforms
     // prevents the system from sleeping.
     // Example use cases: downloading a file, playing audio.
     PreventAppSuspension = 0,
 
     // Prevent the display from going to sleep. This also has the side effect of
     // preventing the system from sleeping, but does not necessarily prevent the
     // app from being suspended on some platforms if the user hides it.
     // Example use case: playing video.
     PreventDisplaySleep = 1,
 };
 
 enum WakeLockReason {
     // Audio is being played.
     ReasonAudioPlayback = 0,
     // Video is being played.
     ReasonVideoPlayback = 1,
     // WakeLock for some other reason.
     ReasonOther = 2,
 };
 
-// Context in which WakeLockService instances operate.
+// Context in which WakeLock instances operate.
 interface WakeLockContext {
-  // Gets a WakeLockService within this context.
+  // Gets a WakeLock within this context.
   GetWakeLock(WakeLockType type,
               WakeLockReason reason,
               string description,
-              WakeLockService& wake_lock);
+              WakeLock& wake_lock);
 };