Panels: Disable auto-resize if initial size is specified during creation.

chrome/browser/ui/panels/panel_browser_window_gtk.cc

Index: chrome/browser/ui/panels/panel_browser_window_gtk.cc
diff --git a/chrome/browser/ui/panels/panel_browser_window_gtk.cc b/chrome/browser/ui/panels/panel_browser_window_gtk.cc
index c9342e02c86ccdf031a714d97855f9a16d7598d2..0f85c21f9e8a009307fcfdeb0b3463751cbb6f4b 100644
--- a/chrome/browser/ui/panels/panel_browser_window_gtk.cc
+++ b/chrome/browser/ui/panels/panel_browser_window_gtk.cc
@@ -142,12 +142,11 @@ void PanelBrowserWindowGtk::OnSizeChanged(int width, int height) {
     return;
 
   window_size_known_ = true;
-  int bottom = panel_->manager()->GetBottomPositionForExpansionState(
-      panel_->expansion_state());
-  int top = bottom - height;
+  int top = bounds_.bottom() - height;
+  int left = bounds_.right() - width;
 
-  gtk_window_move(window_, bounds_.x(), top);
-  StartBoundsAnimation(gfx::Rect(bounds_.x(), top, width, height));
+  gtk_window_move(window_, left, top);
+  StartBoundsAnimation(gfx::Rect(left, top, width, height));
   panel_->OnWindowSizeAvailable();
 
   content::NotificationService::current()->Notify(