keyboard: Update the visibility after tab-switch.

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

Index: chrome/browser/ui/touch/frame/touch_browser_frame_view.cc
diff --git a/chrome/browser/ui/touch/frame/touch_browser_frame_view.cc b/chrome/browser/ui/touch/frame/touch_browser_frame_view.cc
index 545f31cc28923a2116a3dff889799778bdae21da..f80ae5b29707b690c20a53c09f38d866b198ebf4 100644
--- a/chrome/browser/ui/touch/frame/touch_browser_frame_view.cc
+++ b/chrome/browser/ui/touch/frame/touch_browser_frame_view.cc
@@ -8,7 +8,9 @@
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/tab_contents/navigation_controller.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/touch/frame/keyboard_container_view.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/common/notification_service.h"
@@ -35,9 +37,12 @@ TouchBrowserFrameView::TouchBrowserFrameView(BrowserFrame* frame,
   registrar_.Add(this,
                  NotificationType::FOCUS_CHANGED_IN_PAGE,
                  NotificationService::AllSources());
+
+  browser_view->browser()->tabstrip_model()->AddObserver(this);
 }
 
 TouchBrowserFrameView::~TouchBrowserFrameView() {
+  browser_view()->browser()->tabstrip_model()->RemoveObserver(this);
 }
 
 void TouchBrowserFrameView::Layout() {
@@ -98,6 +103,15 @@ void TouchBrowserFrameView::UpdateKeyboardAndLayout(bool should_show_keyboard) {
   }
 }
 
+void TouchBrowserFrameView::TabSelectedAt(TabContentsWrapper* old_contents,
+                                          TabContentsWrapper* new_contents,
+                                          int index,
+                                          bool user_gesture) {
+  TabContents* contents = new_contents->tab_contents();
+  UpdateKeyboardAndLayout(contents->focused_field_is_editable());
+}
+
+
 void TouchBrowserFrameView::Observe(NotificationType type,
                                     const NotificationSource& source,
                                     const NotificationDetails& details) {