Remove an obsolete TODO for removing OnWindowActivated

chrome/browser/memory/tab_manager_delegate_chromeos.cc

Index: chrome/browser/memory/tab_manager_delegate_chromeos.cc
diff --git a/chrome/browser/memory/tab_manager_delegate_chromeos.cc b/chrome/browser/memory/tab_manager_delegate_chromeos.cc
index d1c98a66f522b98be787c6cba2067a92e7067668..e39f69f37c96dfa720f94f12104c658309ba277c 100644
--- a/chrome/browser/memory/tab_manager_delegate_chromeos.cc
+++ b/chrome/browser/memory/tab_manager_delegate_chromeos.cc
@@ -330,10 +330,6 @@ void TabManagerDelegate::OnBrowserSetLastActive(Browser* browser) {
   AdjustFocusedTabScore(pid);
 }
 
-// TODO(cylee): Remove this function if Android process OOM score settings
-// is moved back to Android.
-// For example, negotiate non-overlapping OOM score ranges so Chrome and Android
-// can set OOM score for processes in their own world.
 void TabManagerDelegate::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,