Visual improvements to text filtering in Ash overview mode

ash/wm/overview/window_selector.h

Index: ash/wm/overview/window_selector.h
diff --git a/ash/wm/overview/window_selector.h b/ash/wm/overview/window_selector.h
index 2b44700305a76bfd9e871fdf8c0aa19e88937358..989cc08875805be0fb992a6e508251c032e84b97 100644
--- a/ash/wm/overview/window_selector.h
+++ b/ash/wm/overview/window_selector.h
@@ -66,6 +66,9 @@ class ASH_EXPORT WindowSelector
                  WindowSelectorDelegate* delegate);
   virtual ~WindowSelector();
 
+  // Returns the height of the textfield used for text filtering.
+  int TextFilterHeight() const;
+
   // Cancels window selection.
   void CancelSelection();
 
@@ -114,6 +117,11 @@ class ASH_EXPORT WindowSelector
   // corresponding window grid.
   void Move(Direction direction, bool animate);
 
+  // Instantiates and returns the widget hosting the textfield used in
+  // text filtering.
+  views::Widget* CreateTextFilter(views::TextfieldController* controller,
+                                  aura::Window* root_window);
+
   // Tracks observed windows.
   std::set<aura::Window*> observed_windows_;
 
@@ -159,6 +167,9 @@ class ASH_EXPORT WindowSelector
   // such as enter key to select.
   scoped_ptr<views::Widget> text_filter_widget_;
 
+  // The height in pixels of the text used in text filtering.
+  int text_height_;
+
   DISALLOW_COPY_AND_ASSIGN(WindowSelector);
 };