Remove ILocationProvider.isEnabled() binder call and use cached value instead.

Change-Id: Id6a9f6d2e2f5cc5810a2beeb0f869f06e2d18860
Signed-off-by: Mike Lockwood <lockwood@android.com>

location/java/android/location/ILocationProvider.aidl

@@ -37,7 +37,6 @@ interface ILocationProvider {
     int getAccuracy();
     void enable();
     void disable();
-    boolean isEnabled();
     int getStatus(out Bundle extras);
     long getStatusUpdateTime();
     void enableLocationTracking(boolean enable);

location/java/android/location/LocationProviderImpl.java

@@ -75,10 +75,6 @@ public abstract class LocationProviderImpl extends LocationProvider {
             LocationProviderImpl.this.disable();
         }
 
-        public boolean isEnabled() {
-            return LocationProviderImpl.this.isEnabled();
-        }
-
         public int getStatus(Bundle extras) {
             return LocationProviderImpl.this.getStatus(extras);
         }

location/java/com/android/internal/location/GpsLocationProvider.java

@@ -571,10 +571,6 @@ public class GpsLocationProvider extends ILocationProvider.Stub {
         }
     }
 
-    public boolean isEnabled() {
-        return mEnabled;
-    }
-
     public int getStatus(Bundle extras) {
         if (extras != null) {
             extras.putInt("satellites", mSvCount);

location/java/com/android/internal/location/LocationProviderProxy.java

@@ -40,6 +40,7 @@ public class LocationProviderProxy implements IBinder.DeathRecipient {
     private final String mName;
     private final ILocationProvider mProvider;
     private boolean mLocationTracking = false;
+    private boolean mEnabled = false;
     private long mMinTime = 0;
     private boolean mDead;
 
@@ -152,6 +153,7 @@ public class LocationProviderProxy implements IBinder.DeathRecipient {
     public void enable() {
         try {
             mProvider.enable();
+            mEnabled = true;
         } catch (RemoteException e) {
             Log.e(TAG, "enable failed", e);
         }
@@ -160,18 +162,14 @@ public class LocationProviderProxy implements IBinder.DeathRecipient {
     public void disable() {
         try {
             mProvider.disable();
+            mEnabled = false;
         } catch (RemoteException e) {
             Log.e(TAG, "disable failed", e);
         }
     }
 
     public boolean isEnabled() {
-        try {
-            return mProvider.isEnabled();
-        } catch (RemoteException e) {
-            Log.e(TAG, "isEnabled failed", e);
-            return false;
-        }
+        return mEnabled;
     }
 
     public int getStatus(Bundle extras) {

location/java/com/android/internal/location/MockProvider.java

@@ -95,10 +95,6 @@ public class MockProvider extends ILocationProvider.Stub {
         return mStatusUpdateTime;
     }
 
-    public boolean isEnabled() {
-        return mEnabled;
-    }
-
     public int getAccuracy() {
         return mAccuracy;
     }