views: remove WidgetDelegate::ShouldRestoreWindowSize

This method has no overrides and always returns true. This change
removes it, removes the only call to it, and simplifies code around
that call site as a result.

Bug: None
Change-Id: I2c5b13552923f11615e5b2e629fc2da70fb26eb8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2367650
Commit-Queue: Robert Liao <robliao@chromium.org>
Reviewed-by: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800426}

ui/views/widget/widget.cc

@@ -1599,11 +1599,9 @@ bool Widget::GetSavedWindowPlacement(gfx::Rect* bounds,
   // a window is restored from maximized state, so we can't more accurately
   // track maximized state independently of sizing information.
 
-  // Restore the window's placement from the controller.
-  if (widget_delegate_->GetSavedWindowPlacement(this, bounds, show_state)) {
-    if (!widget_delegate_->ShouldRestoreWindowSize()) {
-      bounds->set_size(non_client_view_->GetPreferredSize());
-    } else {
+  if (!widget_delegate_->GetSavedWindowPlacement(this, bounds, show_state))
+    return false;
+
   gfx::Size minimum_size = GetMinimumSize();
   // Make sure the bounds are at least the minimum size.
   if (bounds->width() < minimum_size.width())
@@ -1611,10 +1609,7 @@ bool Widget::GetSavedWindowPlacement(gfx::Rect* bounds,
 
   if (bounds->height() < minimum_size.height())
     bounds->set_height(minimum_size.height());
-    }
   return true;
-  }
-  return false;
 }
 
 const View::Views& Widget::GetViewsWithLayers() {

ui/views/widget/widget_delegate.cc

@@ -153,10 +153,6 @@ bool WidgetDelegate::GetSavedWindowPlacement(
   return display.bounds().Intersects(*bounds);
 }
 
-bool WidgetDelegate::ShouldRestoreWindowSize() const {
-  return true;
-}
-
 void WidgetDelegate::WidgetInitializing(Widget* widget) {
   widget_ = widget;
   OnWidgetInitializing();

ui/views/widget/widget_delegate.h

@@ -178,12 +178,6 @@ class VIEWS_EXPORT WidgetDelegate {
                                        gfx::Rect* bounds,
                                        ui::WindowShowState* show_state) const;
 
-  // Returns true if the window's size should be restored. If this is false,
-  // only the window's origin is restored and the window is given its
-  // preferred size.
-  // Default is true.
-  virtual bool ShouldRestoreWindowSize() const;
-
   // Hooks for the end of the Widget/Window lifecycle. As of this writing, these
   // callbacks happen like so:
   //   1. Client code calls Widget::CloseWithReason()