GeoLocation: add support for GmsCore location provider

device/geolocation/android/java/src/org/chromium/device/geolocation/LocationProviderAndroid.java

Index: device/geolocation/android/java/src/org/chromium/device/geolocation/LocationProviderAndroid.java
diff --git a/device/geolocation/android/java/src/org/chromium/device/geolocation/LocationProviderAndroid.java b/device/geolocation/android/java/src/org/chromium/device/geolocation/LocationProviderAndroid.java
index 261ce9dfd3c147140266a3e244010aec30152027..6c45be9b48a5f36d8e2dcc959e6ddd233b3e070c 100644
--- a/device/geolocation/android/java/src/org/chromium/device/geolocation/LocationProviderAndroid.java
+++ b/device/geolocation/android/java/src/org/chromium/device/geolocation/LocationProviderAndroid.java
@@ -13,6 +13,7 @@ import android.os.Bundle;
 
 import org.chromium.base.Log;
 import org.chromium.base.ThreadUtils;
+import org.chromium.base.VisibleForTesting;
 
 import java.util.List;
 
@@ -37,17 +38,20 @@ public class LocationProviderAndroid
 
     @Override
     public void start(boolean enableHighAccuracy) {
+        ThreadUtils.assertOnUiThread();
         unregisterFromLocationUpdates();
         registerForLocationUpdates(enableHighAccuracy);
     }
 
     @Override
     public void stop() {
+        ThreadUtils.assertOnUiThread();
         unregisterFromLocationUpdates();
     }
 
     @Override
     public boolean isRunning() {
+        assert ThreadUtils.runningOnUiThread();
         return mIsRunning;
     }
 
@@ -57,7 +61,7 @@ public class LocationProviderAndroid
         // possible that we receive callbacks after unregistering. At this point, the
         // native object will no longer exist.
         if (mIsRunning) {
-            updateNewLocation(location);
+            LocationProviderAdapter.onNewLocationAvailable(location);
         }
     }
 
@@ -70,7 +74,12 @@ public class LocationProviderAndroid
     @Override
     public void onProviderDisabled(String provider) {}
 
-    private void ensureLocationManagerCreated() {
+    @VisibleForTesting
+    public void setLocationManagerForTesting(LocationManager manager) {
+        mLocationManager = manager;
+    }
+
+    private void createLocationManagerIfNeeded() {
         if (mLocationManager != null) return;
         mLocationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
         if (mLocationManager == null) {
@@ -82,7 +91,7 @@ public class LocationProviderAndroid
      * Registers this object with the location service.
      */
     private void registerForLocationUpdates(boolean enableHighAccuracy) {
-        ensureLocationManagerCreated();
+        createLocationManagerIfNeeded();
         if (usePassiveOneShotLocation()) return;
 
         assert !mIsRunning;
@@ -103,8 +112,8 @@ public class LocationProviderAndroid
             unregisterFromLocationUpdates();
             // Propagate an error to JavaScript, this can happen in case of WebView
             // when the embedding app does not have sufficient permissions.
-            LocationProviderAdapter.newErrorAvailable("application does not have sufficient "
-                    + "geolocation permissions.");
+            LocationProviderAdapter.newErrorAvailable(
+                    "application does not have sufficient geolocation permissions.");
         } catch (IllegalArgumentException e) {
             Log.e(TAG, "Caught IllegalArgumentException registering for location updates.");
             unregisterFromLocationUpdates();
@@ -116,33 +125,26 @@ public class LocationProviderAndroid
      * Unregisters this object from the location service.
      */
     private void unregisterFromLocationUpdates() {
-        if (mIsRunning) {
-            mIsRunning = false;
-            mLocationManager.removeUpdates(this);
-        }
-    }
-
-    private void updateNewLocation(Location location) {
-        LocationProviderAdapter.newLocationAvailable(location.getLatitude(),
-                location.getLongitude(), location.getTime() / 1000.0, location.hasAltitude(),
-                location.getAltitude(), location.hasAccuracy(), location.getAccuracy(),
-                location.hasBearing(), location.getBearing(), location.hasSpeed(),
-                location.getSpeed());
+        if (!mIsRunning) return;
+        mIsRunning = false;
+        mLocationManager.removeUpdates(this);
     }
 
     private boolean usePassiveOneShotLocation() {
-        if (!isOnlyPassiveLocationProviderEnabled()) return false;
+        if (!isOnlyPassiveLocationProviderEnabled()) {
+            return false;
+        }
 
         // Do not request a location update if the only available location provider is
         // the passive one. Make use of the last known location and call
-        // onLocationChanged directly.
+        // onNewLocationAvailable directly.
         final Location location =
                 mLocationManager.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);
         if (location != null) {
             ThreadUtils.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
-                    updateNewLocation(location);
+                    LocationProviderAdapter.onNewLocationAvailable(location);
                 }
             });
         }
@@ -154,7 +156,7 @@ public class LocationProviderAndroid
      * in the system.
      */
     private boolean isOnlyPassiveLocationProviderEnabled() {
-        List<String> providers = mLocationManager.getProviders(true);
+        final List<String> providers = mLocationManager.getProviders(true);
         return providers != null && providers.size() == 1
                 && providers.get(0).equals(LocationManager.PASSIVE_PROVIDER);
     }