Restores maximized browser before dragging a tab

chrome/browser/ui/views/tabs/tab_drag_controller.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_TABS_TAB_DRAG_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_DRAG_CONTROLLER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 439 matching lines @@
     return source_tab_drag_data()->contents;
   }
 
   // Returns the Widget of the currently attached TabStrip's BrowserView.
   views::Widget* GetAttachedBrowserWidget();
 
   // Returns true if the tabs were originality one after the other in
   // |source_tabstrip_|.
   bool AreTabsConsecutive();
 
+  // Calculates and returns new bounds for the dragged browser window.
+  // Takes into consideration current and restore bounds of |source| tab strip
+  // preventing the dragged size from being too small. Positions the new bounds
+  // such that the tab that was dragged remains under the |point_in_screen|.
+  // Offsets |drag_bounds| if necessary when dragging to the right from the
+  // source browser.
+  gfx::Rect CalculateDraggedBrowserBounds(TabStrip* source,
+                                          const gfx::Point& point_in_screen,
+                                          std::vector<gfx::Rect>* drag_bounds);
+
+  // Calculates scaled |drag_bounds| for dragged tabs and sets the tabs bounds.
+  // Layout of the tabstrip is performed and a new tabstrip width calculated.
+  // When |last_tabstrip_width| is larger than the new tabstrip width the tabs
+  // in attached tabstrip are scaled and the attached browser is positioned such
+  // that the tab that was dragged remains under the |point_in_screen|.
+  void AdjustBrowserAndTabBoundsForDrag(int last_tabstrip_width,
+                                        const gfx::Point& point_in_screen,
+                                        std::vector<gfx::Rect>* drag_bounds);
+
   // Creates and returns a new Browser to handle the drag.
   Browser* CreateBrowserForDrag(TabStrip* source,
                                 const gfx::Point& point_in_screen,
                                 gfx::Vector2d* drag_offset,
                                 std::vector<gfx::Rect>* drag_bounds);
 
   // Returns the TabStripModel for the specified tabstrip.
   TabStripModel* GetModel(TabStrip* tabstrip) const;
 
   // Returns the location of the cursor. This is either the location of the
@@ skipping 166 matching lines @@
   // See comment around use for more details.
   int attach_x_;
   int attach_index_;
 
   base::WeakPtrFactory<TabDragController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TabDragController);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_DRAG_CONTROLLER_H_