Device Service: Decouple Wake Lock from //content

device/wake_lock/wake_lock_service_impl.h

Index: device/wake_lock/wake_lock_service_impl.h
diff --git a/device/wake_lock/wake_lock_service_impl.h b/device/wake_lock/wake_lock_service_impl.h
index 87a9b004b163fa5e7517c66c7eb38d394bb7891b..c66ec8d1a8fe73c2f111791f007c6f6afb35eafa 100644
--- a/device/wake_lock/wake_lock_service_impl.h
+++ b/device/wake_lock/wake_lock_service_impl.h
@@ -6,7 +6,6 @@
 #define DEVICE_WAKE_LOCK_WAKE_LOCK_SERVICE_IMPL_H_
 
 #include "base/macros.h"
-#include "base/memory/weak_ptr.h"
 #include "device/wake_lock/public/interfaces/wake_lock_service.mojom.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 
@@ -16,7 +15,7 @@ class WakeLockServiceContext;
 
 class WakeLockServiceImpl : public mojom::WakeLockService {
  public:
-  explicit WakeLockServiceImpl(base::WeakPtr<WakeLockServiceContext> context);
+  explicit WakeLockServiceImpl(WakeLockServiceContext* context);
   ~WakeLockServiceImpl() override;
 
   // WakeLockSevice implementation.
@@ -24,7 +23,8 @@ class WakeLockServiceImpl : public mojom::WakeLockService {
   void CancelWakeLock() override;
 
  private:
-  base::WeakPtr<WakeLockServiceContext> context_;
+  // Will outlive this instance.
+  WakeLockServiceContext* context_;
   bool wake_lock_request_outstanding_;
 
   DISALLOW_COPY_AND_ASSIGN(WakeLockServiceImpl);