Add help link when Bluetooth adapter is off for WebBluetooth chooser

chrome/browser/ui/bluetooth/bluetooth_chooser_controller.cc

 // Copyright 2015 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/ui/bluetooth/bluetooth_chooser_controller.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 22 matching lines @@
 }
 
 }  // namespace
 
 BluetoothChooserController::BluetoothChooserController(
     content::RenderFrameHost* owner,
     const content::BluetoothChooser::EventHandler& event_handler)
     : ChooserController(owner,
                         IDS_BLUETOOTH_DEVICE_CHOOSER_PROMPT_ORIGIN,
                         IDS_BLUETOOTH_DEVICE_CHOOSER_PROMPT_EXTENSION_NAME),
-      event_handler_(event_handler),
-      no_devices_text_(l10n_util::GetStringUTF16(
-          IDS_BLUETOOTH_DEVICE_CHOOSER_NO_DEVICES_FOUND_PROMPT)) {}
+      event_handler_(event_handler) {}
 
 BluetoothChooserController::~BluetoothChooserController() {}
 
 bool BluetoothChooserController::ShouldShowIconBeforeText() const {
   return true;
 }
 
 base::string16 BluetoothChooserController::GetNoOptionsText() const {
-  return no_devices_text_;
+  return l10n_util::GetStringUTF16(
+      IDS_BLUETOOTH_DEVICE_CHOOSER_NO_DEVICES_FOUND_PROMPT);
 }
 
 base::string16 BluetoothChooserController::GetOkButtonLabel() const {
   return l10n_util::GetStringUTF16(
       IDS_BLUETOOTH_DEVICE_CHOOSER_PAIR_BUTTON_TEXT);
 }
 
 size_t BluetoothChooserController::NumOptions() const {
   return devices_.size();
 }
@@ skipping 25 matching lines @@
 }
 
 void BluetoothChooserController::RefreshOptions() {
   RecordInteractionWithChooser(event_handler_.is_null());
   if (event_handler_.is_null())
     return;
   ClearAllDevices();
   event_handler_.Run(content::BluetoothChooser::Event::RESCAN, std::string());
 }
 
+void BluetoothChooserController::OpenAdapterOffHelpUrl() const {
+  GetBrowser()->OpenURL(content::OpenURLParams(
+      GURL(chrome::kBluetoothAdapterOffHelpURL), content::Referrer(),
+      WindowOpenDisposition::NEW_FOREGROUND_TAB,
+      ui::PAGE_TRANSITION_AUTO_TOPLEVEL, false /* is_renderer_initialized */));
+}
+
 base::string16 BluetoothChooserController::GetStatus() const {
   return status_text_;
 }
 
 void BluetoothChooserController::Select(size_t index) {
   RecordInteractionWithChooser(event_handler_.is_null());
   if (event_handler_.is_null()) {
     return;
   }
   DCHECK_LT(index, devices_.size());
@@ skipping 25 matching lines @@
 }
 
 void BluetoothChooserController::OnAdapterPresenceChanged(
     content::BluetoothChooser::AdapterPresence presence) {
   ClearAllDevices();
   switch (presence) {
     case content::BluetoothChooser::AdapterPresence::ABSENT:
       NOTREACHED();
       break;
     case content::BluetoothChooser::AdapterPresence::POWERED_OFF:
-      no_devices_text_ =
-          l10n_util::GetStringUTF16(IDS_BLUETOOTH_DEVICE_CHOOSER_ADAPTER_OFF);
       status_text_ = base::string16();
       if (view()) {
         view()->OnAdapterEnabledChanged(
             false /* Bluetooth adapter is turned off */);
       }
       break;
     case content::BluetoothChooser::AdapterPresence::POWERED_ON:
-      no_devices_text_ = l10n_util::GetStringUTF16(
-          IDS_BLUETOOTH_DEVICE_CHOOSER_NO_DEVICES_FOUND_PROMPT);
       status_text_ =
           l10n_util::GetStringUTF16(IDS_BLUETOOTH_DEVICE_CHOOSER_RE_SCAN);
       if (view()) {
         view()->OnAdapterEnabledChanged(
             true /* Bluetooth adapter is turned on */);
       }
       break;
   }
 }
 
@@ skipping 101 matching lines @@
 
 void BluetoothChooserController::ResetEventHandler() {
   event_handler_.Reset();
 }
 
 void BluetoothChooserController::ClearAllDevices() {
   devices_.clear();
   device_id_to_name_map_.clear();
   device_name_counts_.clear();
 }