Move PointerController from sp to shared_ptr

Bug: 160010896
Test: atest PointerController_test, atest InputReader_test, manual usage
Change-Id: Ic43ab94ca76c736fde0d217efeab99b2afd6f622
diff --git a/services/inputflinger/include/InputReaderBase.h b/services/inputflinger/include/InputReaderBase.h
index f8d5351..0fa8787 100644
--- a/services/inputflinger/include/InputReaderBase.h
+++ b/services/inputflinger/include/InputReaderBase.h
@@ -335,7 +335,8 @@
     virtual void getReaderConfiguration(InputReaderConfiguration* outConfig) = 0;
 
     /* Gets a pointer controller associated with the specified cursor device (ie. a mouse). */
-    virtual sp<PointerControllerInterface> obtainPointerController(int32_t deviceId) = 0;
+    virtual std::shared_ptr<PointerControllerInterface> obtainPointerController(
+            int32_t deviceId) = 0;
 
     /* Notifies the input reader policy that some input devices have changed
      * and provides information about all current input devices.
diff --git a/services/inputflinger/include/PointerControllerInterface.h b/services/inputflinger/include/PointerControllerInterface.h
index 194c665..bffff88 100644
--- a/services/inputflinger/include/PointerControllerInterface.h
+++ b/services/inputflinger/include/PointerControllerInterface.h
@@ -33,7 +33,7 @@
  * The pointer controller is responsible for providing synchronization and for tracking
  * display orientation changes if needed.
  */
-class PointerControllerInterface : public virtual RefBase {
+class PointerControllerInterface {
 protected:
     PointerControllerInterface() { }
     virtual ~PointerControllerInterface() { }