Use higher res icon for shelf when Plugin VM is running

We currently use the 32px icon for the shelf, which ends up looking
blurry, so switch to the 192px icon.

Bug: b:162516302
Change-Id: I96dbd62a287e70dc0d20ab0872c640b3ecf2bc2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2379463
Auto-Submit: Timothy Loh <timloh@chromium.org>
Reviewed-by: Nancy Wang <nancylingwang@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802502}

chrome/browser/ui/ash/launcher/app_service/app_service_app_window_launcher_controller.cc

@@ -515,7 +515,7 @@ void AppServiceAppWindowLauncherController::RegisterWindow(
       static_cast<exo::ShellSurfaceBase*>(
           views::Widget::GetWidgetForNativeWindow(window)->widget_delegate())
           ->SetIcon(*ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
-              IDR_LOGO_PLUGIN_VM_DEFAULT_32));
+              IDR_LOGO_PLUGIN_VM_DEFAULT_192));
     }
   }
 }