Reland: Refactor DeviceMotionEventPump to use //device/generic_sensor instead of //device/sensors

device/generic_sensor/android/java/src/org/chromium/device/sensors/PlatformSensorProvider.java

Index: device/generic_sensor/android/java/src/org/chromium/device/sensors/PlatformSensorProvider.java
diff --git a/device/generic_sensor/android/java/src/org/chromium/device/sensors/PlatformSensorProvider.java b/device/generic_sensor/android/java/src/org/chromium/device/sensors/PlatformSensorProvider.java
index 18aebf099213256d52fc682a404cc447cad1a308..a7e7a15fb59c2f913de882a2e6bc8464f8e82f45 100644
--- a/device/generic_sensor/android/java/src/org/chromium/device/sensors/PlatformSensorProvider.java
+++ b/device/generic_sensor/android/java/src/org/chromium/device/sensors/PlatformSensorProvider.java
@@ -29,7 +29,7 @@ class PlatformSensorProvider {
      * creation and @see android.hardware.SensorEventListener registration.
      * @see android.hardware.SensorManager
      */
-    private final SensorManager mSensorManager;
+    private SensorManager mSensorManager;
 
     /**
      * Thread that is handling all sensor events.
@@ -135,6 +135,14 @@ class PlatformSensorProvider {
         return new PlatformSensorProvider(ContextUtils.getApplicationContext());
     }
 
+    /**
+     * Sets |mSensorManager| to null for testing purpose.
+     */
+    @CalledByNative
+    protected void setSensorManagerToNullForTest() {
+        mSensorManager = null;
+    }
+
     /**
      * Creates PlatformSensor instance.
      *