Add queryForNewLocalDevices to gcdPrivate

chrome/browser/extensions/api/gcd_private/gcd_private_api.cc

 // Copyright 2014 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 "chrome/browser/extensions/api/gcd_private/gcd_private_api.h"
 
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/local_discovery/cloud_device_list.h"
 #include "chrome/browser/local_discovery/cloud_print_printer_list.h"
@@ skipping 136 matching lines @@
   for (GCDDeviceMap::iterator i = known_devices_.begin();
        i != known_devices_.end();
        i++) {
     EventRouter::Get(browser_context_)
         ->BroadcastEvent(MakeCloudDeviceStateChangedEvent(false, *i->second));
   }
 
   known_devices_.clear();
 }
 
+bool GcdPrivateAPI::QueryForDevices() {
+  if (!privet_device_lister_)
+    return false;
+
+  privet_device_lister_->DiscoverNewDevices(true);
+
+  return true;
+}
+
 // static
 void GcdPrivateAPI::SetGCDApiFlowFactoryForTests(
     GCDApiFlowFactoryForTests* factory) {
   g_gcd_api_flow_factory = factory;
 }
 
 GcdPrivateGetCloudDeviceListFunction::GcdPrivateGetCloudDeviceListFunction() {
 }
 GcdPrivateGetCloudDeviceListFunction::~GcdPrivateGetCloudDeviceListFunction() {
 }
@@ skipping 61 matching lines @@
 
     devices.push_back(device);
   }
 
   results_ = gcd_private::GetCloudDeviceList::Results::Create(devices);
 
   SendResponse(true);
   Release();
 }
 
+GcdPrivateQueryForNewLocalDevicesFunction::
+    GcdPrivateQueryForNewLocalDevicesFunction() {
+}
+
+GcdPrivateQueryForNewLocalDevicesFunction::
+    ~GcdPrivateQueryForNewLocalDevicesFunction() {
+}
+
+bool GcdPrivateQueryForNewLocalDevicesFunction::RunSync() {
+  GcdPrivateAPI* gcd_api =
+      BrowserContextKeyedAPIFactory<GcdPrivateAPI>::Get(GetProfile());
+
+  if (!gcd_api)
+    return false;
+
+  if (!gcd_api->QueryForDevices()) {
+    error_ = "You must first subscribe to onDeviceStateChanged notifications";
+    return false;
+  }
+
+  return true;
+}
+
 GcdPrivateStartSetupFunction::GcdPrivateStartSetupFunction() {
 }
 
 GcdPrivateStartSetupFunction::~GcdPrivateStartSetupFunction() {
 }
 
 bool GcdPrivateStartSetupFunction::RunAsync() {
   return false;
 }
 
@@ skipping 31 matching lines @@
 }
 
 GcdPrivateStopSetupFunction::~GcdPrivateStopSetupFunction() {
 }
 
 bool GcdPrivateStopSetupFunction::RunAsync() {
   return false;
 }
 
 }  // namespace extensions