Add Panel::SetPanelBoundsInstantly for all platforms.

chrome/browser/ui/panels/panel_browser_view.cc

Index: chrome/browser/ui/panels/panel_browser_view.cc
diff --git a/chrome/browser/ui/panels/panel_browser_view.cc b/chrome/browser/ui/panels/panel_browser_view.cc
index cea18f834ac1f2b6a0a2399d6222388bf4ecc6f9..335ae29e925f301a0b1fd8007471e589ea19046e 100644
--- a/chrome/browser/ui/panels/panel_browser_view.cc
+++ b/chrome/browser/ui/panels/panel_browser_view.cc
@@ -108,12 +108,17 @@ bool PanelBrowserView::CanMaximize() const {
 }
 
 void PanelBrowserView::SetBounds(const gfx::Rect& bounds) {
+  SetBoundsInternal(bounds, true);
+}
+
+void PanelBrowserView::SetBoundsInternal(const gfx::Rect& bounds,
+                                         bool animate) {
   if (bounds_ == bounds)
     return;
   bounds_ = bounds;
 
   // No animation if the panel is being dragged.
-  if (mouse_dragging_state_ == DRAGGING_STARTED) {
+  if (!animate || mouse_dragging_state_ == DRAGGING_STARTED) {
     ::BrowserView::SetBounds(bounds);
     return;
   }
@@ -233,7 +238,11 @@ gfx::Rect PanelBrowserView::GetPanelBounds() const {
 }
 
 void PanelBrowserView::SetPanelBounds(const gfx::Rect& bounds) {
-  SetBounds(bounds);
+  SetBoundsInternal(bounds, true);
+}
+
+void PanelBrowserView::SetPanelBoundsInstantly(const gfx::Rect& bounds) {
+  SetBoundsInternal(bounds, false);
 }
 
 void PanelBrowserView::ClosePanel() {