Remove docked windows entirely in M59.

chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc

Index: chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
diff --git a/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc b/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
index 761872a531f2320dddcb6775f7a1a7b608522890..d7074d1320df5695653dd5d9404fe5a550f00960 100644
--- a/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
+++ b/chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc
@@ -45,8 +45,6 @@ ChromeNativeAppWindowViewsAura::GetRestorableState(
     case ui::SHOW_STATE_DEFAULT:
     case ui::SHOW_STATE_MINIMIZED:
     case ui::SHOW_STATE_INACTIVE:
-    // TODO(afakhry): Remove Docked Windows in M58.
-    case ui::SHOW_STATE_DOCKED:
     case ui::SHOW_STATE_END:
       return ui::SHOW_STATE_NORMAL;
   }
@@ -104,14 +102,6 @@ ui::WindowShowState ChromeNativeAppWindowViewsAura::GetRestoredState() const {
   // Use kPreMinimizedShowStateKey in case a window is minimized/hidden.
   ui::WindowShowState restore_state = widget()->GetNativeWindow()->GetProperty(
       aura::client::kPreMinimizedShowStateKey);
-
-  // TODO(afakhry): Remove in M58.
-  if (widget()->GetNativeWindow()->GetProperty(aura::client::kShowStateKey) ==
-          ui::SHOW_STATE_DOCKED ||
-      restore_state == ui::SHOW_STATE_DOCKED) {
-    return ui::SHOW_STATE_DOCKED;
-  }
-
   return GetRestorableState(restore_state);
 }