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

chrome/browser/chooser_controller/mock_chooser_controller.cc

Index: chrome/browser/chooser_controller/mock_chooser_controller.cc
diff --git a/chrome/browser/chooser_controller/mock_chooser_controller.cc b/chrome/browser/chooser_controller/mock_chooser_controller.cc
index 72674501f107ae2984a36ebec47eb97350266f7f..cf01878923b7fb18df64f4592bcd0aba4af97ce2 100644
--- a/chrome/browser/chooser_controller/mock_chooser_controller.cc
+++ b/chrome/browser/chooser_controller/mock_chooser_controller.cc
@@ -18,6 +18,10 @@ MockChooserController::MockChooserController(content::RenderFrameHost* owner)
 
 MockChooserController::~MockChooserController() {}
 
+bool MockChooserController::HasIconBeforeText() const {
+  return false;
+}
+
 base::string16 MockChooserController::GetNoOptionsText() const {
   return no_options_text_;
 }
@@ -30,6 +34,10 @@ 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];
 }