Move IN_OVERFLOW from Panel::ExpansionState to new enum.

chrome/browser/ui/panels/panel_browser_view.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/panels/panel_browser_view.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_bounds_animation.h"
@@ skipping 478 matching lines @@
       base::TimeTicks::Now() - attention_cleared_time_ <
       base::TimeDelta::FromMilliseconds(kSuspendMinimizeOnClickIntervalMs)) {
     return true;
   }
 
   // Ignore long clicks. Treated as a canceled click to be consistent with Mac.
   if (base::TimeTicks::Now() - mouse_pressed_time_ >
       base::TimeDelta::FromMilliseconds(kShortClickThresholdMs))
     return true;
 
-  Panel::ExpansionState new_expansion_state =
-    (panel_->expansion_state() != Panel::EXPANDED) ? Panel::EXPANDED
-                                                   : Panel::MINIMIZED;
-  panel_->SetExpansionState(new_expansion_state);
+  if (panel_->layout_state() == Panel::IN_OVERFLOW) {
+    panel_->SetExpansionState(Panel::EXPANDED);
+    panel_->SetLayoutState(Panel::DOCKED);
+  } else {
+    Panel::ExpansionState new_expansion_state =
+        (panel_->expansion_state() != Panel::EXPANDED) ? Panel::EXPANDED
+                                                       : Panel::MINIMIZED;
+    panel_->SetExpansionState(new_expansion_state);
+  }
+
   return true;
 }
 
 bool PanelBrowserView::OnTitlebarMouseCaptureLost() {
   if (mouse_dragging_state_ == DRAGGING_STARTED)
     return EndDragging(true);
   return true;
 }
 
 bool PanelBrowserView::EndDragging(bool cancelled) {
@@ skipping 105 matching lines @@
 }
 
 bool NativePanelTestingWin::IsWindowSizeKnown() const {
   return true;
 }
 
 bool NativePanelTestingWin::IsAnimatingBounds() const {
   return panel_browser_view_->bounds_animator_.get() &&
          panel_browser_view_->bounds_animator_->is_animating();
 }