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 0a887e2e5106c468c3f6da82f4a9c8dd84b48ee0..0e4b5e730bf6a31337d97e65d4642906040d3e78 100644
--- a/chrome/browser/ui/panels/panel_browser_view.cc
+++ b/chrome/browser/ui/panels/panel_browser_view.cc
@@ -108,26 +108,7 @@ bool PanelBrowserView::CanMaximize() const {
 }
 
 void PanelBrowserView::SetBounds(const gfx::Rect& bounds) {
-  if (bounds_ == bounds)
-    return;
-  bounds_ = bounds;
-
-  // No animation if the panel is being dragged.
-  if (mouse_dragging_state_ == DRAGGING_STARTED) {
-    ::BrowserView::SetBounds(bounds);
-    return;
-  }
-
-  animation_start_bounds_ = GetBounds();
-
-  if (!bounds_animator_.get()) {
-    bounds_animator_.reset(new ui::SlideAnimation(this));
-    bounds_animator_->SetSlideDuration(kSetBoundsAnimationMs);
-  }
-
-  if (bounds_animator_->IsShowing())
-    bounds_animator_->Reset();
-  bounds_animator_->Show();
+  SetPanelBounds(bounds, true);  // use animation.
 }
 
 void PanelBrowserView::UpdateTitleBar() {
@@ -232,8 +213,27 @@ gfx::Rect PanelBrowserView::GetPanelBounds() const {
   return bounds_;
 }
 
-void PanelBrowserView::SetPanelBounds(const gfx::Rect& bounds) {
-  SetBounds(bounds);
+void PanelBrowserView::SetPanelBounds(const gfx::Rect& bounds, bool animate) {
+  if (bounds_ == bounds)
+    return;
+  bounds_ = bounds;
+
+  // No animation if the panel is being dragged.
+  if (!animate || mouse_dragging_state_ == DRAGGING_STARTED) {
+    ::BrowserView::SetBounds(bounds);
+    return;
+  }
+
+  animation_start_bounds_ = GetBounds();
+
+  if (!bounds_animator_.get()) {
+    bounds_animator_.reset(new ui::SlideAnimation(this));
+    bounds_animator_->SetSlideDuration(kSetBoundsAnimationMs);
+  }
+
+  if (bounds_animator_->IsShowing())
+    bounds_animator_->Reset();
+  bounds_animator_->Show();
 }
 
 void PanelBrowserView::ClosePanel() {