Adds EngineGeolocationFeature for Blimp Geolocation project.

blimp/engine/feature/geolocation/blimp_location_provider.cc

 // Copyright (c) 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "blimp/engine/feature/geolocation/blimp_location_provider.h"
 
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/memory/weak_ptr.h"
 #include "content/public/common/geoposition.h"
 
 namespace blimp {
 namespace engine {
 
 BlimpLocationProvider::BlimpLocationProvider() {}
 
 BlimpLocationProvider::~BlimpLocationProvider() {
   StopProvider();
 }
 
+void BlimpLocationProvider::SetDelegate(
+    base::WeakPtr<BlimpLocationProvider::Delegate> delegate) {
+  DCHECK(delegate);
+  DCHECK(!delegate_);
+
+  delegate_ = delegate;
+}
+
 bool BlimpLocationProvider::StartProvider(bool high_accuracy) {
-  NOTIMPLEMENTED();
+  delegate_->StartProvider(high_accuracy);
   return true;
 }
 
 void BlimpLocationProvider::StopProvider() {
+  delegate_->StopProvider();
 }
 
 void BlimpLocationProvider::GetPosition(content::Geoposition* position) {
   DCHECK(position);
 
   *position = position_;
 }
 
 void BlimpLocationProvider::RequestRefresh() {
-  NOTIMPLEMENTED();
+  delegate_->RequestRefresh();
 }
 
 void BlimpLocationProvider::OnPermissionGranted() {
   RequestRefresh();
-  NOTIMPLEMENTED();
-}
-
-void BlimpLocationProvider::NotifyCallback(
-    const content::Geoposition& position) {
-  DCHECK(!callback_.is_null());
-
-  callback_.Run(this, position);
-}
-
-void BlimpLocationProvider::OnLocationResponse(
-    const content::Geoposition& position) {
-  NotifyCallback(position);
-  NOTIMPLEMENTED();
 }
 
 void BlimpLocationProvider::SetUpdateCallback(
     const LocationProviderUpdateCallback& callback) {
-  DCHECK(!callback.is_null());
-
-  callback_ = callback;
+  delegate_->SetUpdateCallback(base::Bind(callback, base::Unretained(this)));
 }
 
 }  // namespace engine
 }  // namespace blimp