Gets rid of LocationProviderBase.

device/geolocation/fake_location_provider.cc

Index: device/geolocation/fake_location_provider.cc
diff --git a/device/geolocation/fake_location_provider.cc b/device/geolocation/fake_location_provider.cc
index 18e25694bbc2652acee1c95db2e9fa5cae511967..14bc4d0fb9cca5c5b3b1e4581949b46449d8fb0a 100644
--- a/device/geolocation/fake_location_provider.cc
+++ b/device/geolocation/fake_location_provider.cc
@@ -29,7 +29,8 @@ void FakeLocationProvider::HandlePositionChanged(const Geoposition& position) {
     // The location arbitrator unit tests rely on this method running
     // synchronously.
     position_ = position;
-    NotifyCallback(position_);
+    if (!callback_.is_null())
+      callback_.Run(this, position_);
   } else {
     provider_task_runner_->PostTask(
         FROM_HERE, base::Bind(&FakeLocationProvider::HandlePositionChanged,
@@ -37,6 +38,11 @@ void FakeLocationProvider::HandlePositionChanged(const Geoposition& position) {
   }
 }
 
+void FakeLocationProvider::SetUpdateCallback(
+    const LocationProviderUpdateCallback& callback) {
+  callback_ = callback;
+}
+
 bool FakeLocationProvider::StartProvider(bool high_accuracy) {
   state_ = high_accuracy ? HIGH_ACCURACY : LOW_ACCURACY;
   return true;