Update LabelButtons in the Toolbar for Material Design

chrome/browser/ui/views/toolbar/toolbar_view.cc

Index: chrome/browser/ui/views/toolbar/toolbar_view.cc
diff --git a/chrome/browser/ui/views/toolbar/toolbar_view.cc b/chrome/browser/ui/views/toolbar/toolbar_view.cc
index 1928ed68164cc24f3de2a99093902c22640a3b29..5f1b2a608f0a7b92ac4182509a32659576a85043 100644
--- a/chrome/browser/ui/views/toolbar/toolbar_view.cc
+++ b/chrome/browser/ui/views/toolbar/toolbar_view.cc
@@ -813,6 +813,11 @@ void ToolbarView::LoadImages() {
 
   home_->SetImage(views::Button::STATE_NORMAL,
                   *(tp->GetImageSkiaNamed(IDR_HOME)));
+
+  if (ui::MaterialDesignController::IsModeMaterial()) {
+    app_menu_->SetImage(views::Button::STATE_NORMAL,
+                        *(tp->GetImageSkiaNamed(IDR_TOOLS)));
+  }
 }
 
 void ToolbarView::ShowCriticalNotification() {