Add signal strength indicator icon to WebBluetooth chooser on non-Mac desktops

chrome/browser/chooser_controller/mock_chooser_controller.cc

 // Copyright 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 "chrome/browser/chooser_controller/mock_chooser_controller.h"
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 MockChooserController::MockChooserController(content::RenderFrameHost* owner)
     : ChooserController(owner,
                         IDS_USB_DEVICE_CHOOSER_PROMPT_ORIGIN,
                         IDS_USB_DEVICE_CHOOSER_PROMPT_EXTENSION_NAME),
       no_options_text_(l10n_util::GetStringUTF16(
           IDS_DEVICE_CHOOSER_NO_DEVICES_FOUND_PROMPT)) {}
 
 MockChooserController::~MockChooserController() {}
 
+bool MockChooserController::HasIconBeforeText() const {
+  return false;
+}
+
 base::string16 MockChooserController::GetNoOptionsText() const {
   return no_options_text_;
 }
 
 base::string16 MockChooserController::GetOkButtonLabel() const {
   return l10n_util::GetStringUTF16(IDS_USB_DEVICE_CHOOSER_CONNECT_BUTTON_TEXT);
 }
 
 size_t MockChooserController::NumOptions() const {
   return option_names_.size();
 }
 
+int MockChooserController::GetSignalStrengthLevel(size_t index) const {
+  return -1;
+}
+
 base::string16 MockChooserController::GetOption(size_t index) const {
   return option_names_[index];
 }
 
 base::string16 MockChooserController::GetStatus() const {
   return status_text_;
 }
 
 void MockChooserController::OnAdapterPresenceChanged(
     content::BluetoothChooser::AdapterPresence presence) {
@@ skipping 58 matching lines @@
       if (view())
         view()->OnOptionRemoved(index);
       return;
     }
   }
 }
 
 void MockChooserController::ClearAllOptions() {
   option_names_.clear();
 }