Added an ActivationReason parameter to ActivationChangeObserver::OnWindowActivated(...).

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

Index: chrome/browser/ui/views/extensions/extension_popup_aura.cc
diff --git a/chrome/browser/ui/views/extensions/extension_popup_aura.cc b/chrome/browser/ui/views/extensions/extension_popup_aura.cc
index e3e7c909439c83437b801a6a9afe0c9258bbdb41..7901f3f2f7cfe70f472582db3833e966892808ca 100644
--- a/chrome/browser/ui/views/extensions/extension_popup_aura.cc
+++ b/chrome/browser/ui/views/extensions/extension_popup_aura.cc
@@ -53,8 +53,10 @@ void ExtensionPopupAura::OnWidgetDestroying(views::Widget* widget) {
   }
 }
 
-void ExtensionPopupAura::OnWindowActivated(aura::Window* gained_active,
-                                           aura::Window* lost_active) {
+void ExtensionPopupAura::OnWindowActivated(
+    aura::client::ActivationChangeObserver::ActivationReason reason,
+    aura::Window* gained_active,
+    aura::Window* lost_active) {
   // Close on anchor window activation (ie. user clicked the browser window).
   // DesktopNativeWidgetAura does not trigger the expected browser widget
   // [de]activation events when activating widgets in its own root window.