Adds GeolocationFeature for Blimp Geolocation project.

device/geolocation/fake_location_provider.cc

+// Copyright (c) 2012 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.
+
+// This file implements a fake location provider and the factory functions for
+// various ways of creating it.
+// TODO(lethalantidote): Convert location_arbitrator_impl to use actual mock
+// instead of FakeLocationProvider.
+
+#include "device/geolocation/fake_location_provider.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/compiler_specific.h"
+#include "base/location.h"
+#include "base/logging.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/thread_task_runner_handle.h"
+
+namespace device {
+
+FakeLocationProvider::FakeLocationProvider()
+    : provider_task_runner_(base::ThreadTaskRunnerHandle::Get()) {}
+
+FakeLocationProvider::~FakeLocationProvider() {}
+
+void FakeLocationProvider::HandlePositionChanged(const Geoposition& position) {
+  if (provider_task_runner_->BelongsToCurrentThread()) {
+    // The location arbitrator unit tests rely on this method running
+    // synchronously.
+    position_ = position;
+    NotifyCallback(position_);
+  } else {
+    provider_task_runner_->PostTask(
+        FROM_HERE, base::Bind(&FakeLocationProvider::HandlePositionChanged,
+                              base::Unretained(this), position));
+  }
+}
+
+bool FakeLocationProvider::StartProvider(bool high_accuracy) {
+  state_ = high_accuracy ? HIGH_ACCURACY : LOW_ACCURACY;
+  return true;
+}
+
+void FakeLocationProvider::StopProvider() {
+  state_ = STOPPED;
+}
+
+const Geoposition& FakeLocationProvider::GetPosition() {
+  return position_;
+}
+
+void FakeLocationProvider::OnPermissionGranted() {
+  is_permission_granted_ = true;
+}
+
+}  // namespace device