[Cleanup] Rename WindowSettings to WindowState

ash/wm/caption_buttons/frame_caption_button_container_view.cc

Index: ash/wm/caption_buttons/frame_caption_button_container_view.cc
diff --git a/ash/wm/caption_buttons/frame_caption_button_container_view.cc b/ash/wm/caption_buttons/frame_caption_button_container_view.cc
index 3425afa45c3a32d7d80d91632673767d9ea8a4e8..5c024a0e8e347949f926451329813c7508f89d92 100644
--- a/ash/wm/caption_buttons/frame_caption_button_container_view.cc
+++ b/ash/wm/caption_buttons/frame_caption_button_container_view.cc
@@ -9,7 +9,7 @@
 #include "ash/shell_delegate.h"
 #include "ash/wm/caption_buttons/alternate_frame_caption_button.h"
 #include "ash/wm/caption_buttons/frame_maximize_button.h"
-#include "ash/wm/window_settings.h"
+#include "ash/wm/window_state.h"
 #include "grit/ash_resources.h"
 #include "grit/ui_strings.h"  // Accessibility names
 #include "ui/base/hit_test.h"
@@ -190,7 +190,7 @@ void FrameCaptionButtonContainerView::Layout() {
       // The new assets only make sense if the window is maximized or fullscreen
       // because we usually use a black header in this case.
       if ((frame_->IsMaximized() || frame_->IsFullscreen()) &&
-          wm::GetWindowSettings(
+          wm::GetWindowState(
               frame_->GetNativeWindow())->tracked_by_workspace()) {
         SetButtonImages(size_button_,
                         IDR_AURA_WINDOW_MAXIMIZED_RESTORE2,