Do not install focus rings for buttons in the extensions menu.

Bug: 1005618
Change-Id: I379360ea93312f7d6a3b0d9005b2b6895ac22b2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1816717Reviewed-by: Peter Boström <pbos@chromium.org>
Commit-Queue: Charlene Yan <cyan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#698575}

chrome/browser/ui/views/extensions/extensions_menu_button.cc

@@ -27,6 +27,9 @@ ExtensionsMenuButton::ExtensionsMenuButton(
       parent_(parent),
       controller_(controller) {
   SetInkDropMode(InkDropMode::ON);
+
+  // Items within a menu should not show focus rings.
+  SetInstallFocusRingOnFocus(false);
   SetFocusBehavior(FocusBehavior::ALWAYS);
   SetButtonController(std::make_unique<HoverButtonController>(
       this, this,

chrome/browser/ui/views/extensions/extensions_menu_item_view.cc

@@ -30,6 +30,9 @@ std::unique_ptr<views::ImageButton> CreateButton(
     int id,
     views::ButtonListener* listener) {
   auto button = views::CreateVectorImageButton(listener);
+
+  // Items within a menu should not show focus rings.
+  button->SetInstallFocusRingOnFocus(false);
   button->SetFocusBehavior(views::View::FocusBehavior::ALWAYS);
   button->SetID(id);
   return button;