Change panels to be able to turn off autoresize.

chrome/browser/ui/panels/docked_panel_strip.cc

Index: chrome/browser/ui/panels/docked_panel_strip.cc
diff --git a/chrome/browser/ui/panels/docked_panel_strip.cc b/chrome/browser/ui/panels/docked_panel_strip.cc
index 4b2099a88a8d63025090275775bbf7f3faa1e9f0..ab679d93a65080f3a9895e56c0f9247653ced89a 100644
--- a/chrome/browser/ui/panels/docked_panel_strip.cc
+++ b/chrome/browser/ui/panels/docked_panel_strip.cc
@@ -449,7 +449,11 @@ void DockedPanelStrip::DecrementMinimizedPanels() {
 }
 
 void DockedPanelStrip::ResizePanelWindow(
-    Panel* panel, const gfx::Size& preferred_window_size) {
+    Panel* panel,
+    const gfx::Size& preferred_window_size,
+    AutoResizeState auto_resize_state) {
+  DCHECK(auto_resize_state == AUTORESIZE_ENABLED ||
+         auto_resize_state == AUTORESIZE_DISABLED);
   // The panel width:
   // * cannot grow or shrink to go beyond [min_width, max_width]
   int new_width = preferred_window_size.width();
@@ -471,6 +475,10 @@ void DockedPanelStrip::ResizePanelWindow(
   if (new_size != panel->restored_size())
     panel->set_restored_size(new_size);
 
+  // After the restored size has been set, then set the auto-resize
+  // state as appropriate.
+  panel->SetAutoResizable(auto_resize_state == AUTORESIZE_ENABLED);
+
   gfx::Rect bounds = panel->GetBounds();
   int delta_x = bounds.width() - new_width;