[WIN]Save work area of window and adjust bounds to ensure it fit on screen before show.

apps/shell_window_geometry_cache.h

Index: apps/shell_window_geometry_cache.h
diff --git a/apps/shell_window_geometry_cache.h b/apps/shell_window_geometry_cache.h
index 334b9fbbfd434587e3e8845bee703ff97d797b68..8aed76f0aae353e8b4cf064cdca4938a47bc7053 100644
--- a/apps/shell_window_geometry_cache.h
+++ b/apps/shell_window_geometry_cache.h
@@ -69,6 +69,7 @@ class ShellWindowGeometryCache
   void SaveGeometry(const std::string& extension_id,
                     const std::string& window_id,
                     const gfx::Rect& bounds,
+                    const gfx::Rect& work_area,
                     ui::WindowShowState state);
 
   // Get any saved geometry and state associated with |extension_id| and
@@ -77,6 +78,7 @@ class ShellWindowGeometryCache
   bool GetGeometry(const std::string& extension_id,
                    const std::string& window_id,
                    gfx::Rect* bounds,
+                   gfx::Rect* work_area,
                    ui::WindowShowState* state);
 
   // BrowserContextKeyedService
@@ -98,6 +100,7 @@ class ShellWindowGeometryCache
   struct WindowData {
     WindowData() : window_state(ui::SHOW_STATE_DEFAULT) {}
     gfx::Rect bounds;
+    gfx::Rect work_area;
     ui::WindowShowState window_state;
     base::Time last_change;
   };