Revert 76228 - Move core pieces of geolocation from chrome to content.This is...

content/browser/geolocation/gateway_data_provider_common.cc

Index: content/browser/geolocation/gateway_data_provider_common.cc
===================================================================
--- content/browser/geolocation/gateway_data_provider_common.cc	(revision 76230)
+++ content/browser/geolocation/gateway_data_provider_common.cc	(working copy)
@@ -1,90 +0,0 @@
-// Copyright (c) 2010 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 "content/browser/geolocation/gateway_data_provider_common.h"
-
-#include "base/utf_string_conversions.h"
-
-GatewayDataProviderCommon::GatewayDataProviderCommon()
-    : Thread("Geolocation_gateway_provider"),
-      is_first_scan_complete_(false),
-      ALLOW_THIS_IN_INITIALIZER_LIST(task_factory_(this)) {
-}
-
-GatewayDataProviderCommon::~GatewayDataProviderCommon() {
-  // Thread must be stopped before entering destructor chain to avoid race
-  // conditions; see comment in DeviceDataProvider::Unregister.
-  DCHECK(!IsRunning()); // Must call StopDataProvider before destroying me.
-}
-
-bool GatewayDataProviderCommon::StartDataProvider() {
-  DCHECK(CalledOnClientThread());
-  DCHECK(!IsRunning());  // StartDataProvider must only be called once.
-  return Start();
-}
-
-void GatewayDataProviderCommon::StopDataProvider() {
-  DCHECK(CalledOnClientThread());
-  Stop();
-}
-
-bool GatewayDataProviderCommon::GetData(GatewayData *data) {
-  DCHECK(CalledOnClientThread());
-  DCHECK(data);
-  base::AutoLock lock(data_mutex_);
-  *data = gateway_data_;
-  // If we've successfully completed a scan, indicate that we have all of the
-  // data we can get.
-  return is_first_scan_complete_;
-}
-
-// Thread implementation.
-void GatewayDataProviderCommon::Init() {
-  DCHECK(gateway_api_ == NULL);
-  gateway_api_.reset(NewGatewayApi());
-  if (gateway_api_ == NULL) {
-    // Error! Can't do scans, so don't try and schedule one.
-    is_first_scan_complete_ = true;
-    return;
-  }
-  DCHECK(polling_policy_ == NULL);
-  polling_policy_.reset(NewPollingPolicy());
-  DCHECK(polling_policy_ != NULL);
-  ScheduleNextScan(0);
-}
-
-void GatewayDataProviderCommon::CleanUp() {
-  // Destroy these instances in the thread on which they were created.
-  gateway_api_.reset();
-  polling_policy_.reset();
-}
-
-void GatewayDataProviderCommon::DoRouterScanTask() {
-  bool update_available = false;
-  GatewayData new_data;
-  if (!gateway_api_->GetRouterData(&new_data.router_data)) {
-    ScheduleNextScan(polling_policy_->NoRouterInterval());
-  } else {
-    {
-      base::AutoLock lock(data_mutex_);
-      update_available = gateway_data_.DiffersSignificantly(new_data);
-      gateway_data_ = new_data;
-    }
-    ScheduleNextScan(polling_policy_->PollingInterval());
-  }
-  if (update_available || !is_first_scan_complete_) {
-    is_first_scan_complete_ = true;
-    NotifyListeners();
-  }
-}
-
-void GatewayDataProviderCommon::ScheduleNextScan(int interval) {
-  message_loop()->PostDelayedTask(
-      FROM_HERE, task_factory_.NewRunnableMethod(
-          &GatewayDataProviderCommon::DoRouterScanTask), interval);
-}
-
-GatewayPollingPolicyInterface* GatewayDataProviderCommon::NewPollingPolicy() {
-  return new GenericGatewayPollingPolicy;
-}