Browser should get notified if a views textfield changes focus. In addition,

chrome/browser/ui/touch/frame/touch_browser_frame_view.h

Index: chrome/browser/ui/touch/frame/touch_browser_frame_view.h
diff --git a/chrome/browser/ui/touch/frame/touch_browser_frame_view.h b/chrome/browser/ui/touch/frame/touch_browser_frame_view.h
index c06600faa6233d630558b303ceae7777ad01a6cd..958aa6f8a99b8041758155ae2618afe1173ab665 100644
--- a/chrome/browser/ui/touch/frame/touch_browser_frame_view.h
+++ b/chrome/browser/ui/touch/frame/touch_browser_frame_view.h
@@ -10,6 +10,7 @@
 #include "chrome/browser/tabs/tab_strip_model_observer.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
+#include "views/focus/focus_manager.h"
 
 class BrowserFrame;
 class BrowserView;
@@ -18,6 +19,7 @@ class NotificationDetails;
 class NotificationSource;
 
 class TouchBrowserFrameView : public OpaqueBrowserFrameView,
+                              public views::FocusChangeListener,
                               public TabStripModelObserver,
                               public NotificationObserver {
  public:
@@ -28,9 +30,14 @@ class TouchBrowserFrameView : public OpaqueBrowserFrameView,
   // Overridden from OpaqueBrowserFrameView
   virtual void Layout();
 
+  // views::FocusChangeListener implementation
+  virtual void FocusWillChange(views::View* focused_before,
+                               views::View* focused_now);
+
  protected:
   // Overridden from OpaqueBrowserFrameView
   virtual int GetReservedHeight() const;
+  virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
 
  private:
   virtual void InitVirtualKeyboard();
@@ -50,6 +57,7 @@ class TouchBrowserFrameView : public OpaqueBrowserFrameView,
   bool keyboard_showing_;
   KeyboardContainerView* keyboard_;
   NotificationRegistrar registrar_;
+  bool focus_listener_added_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchBrowserFrameView);
 };