Grab inputs on WebUI screen locker.

chrome/browser/chromeos/login/webui_screen_locker.h

Index: chrome/browser/chromeos/login/webui_screen_locker.h
diff --git a/chrome/browser/chromeos/login/webui_screen_locker.h b/chrome/browser/chromeos/login/webui_screen_locker.h
index 17d846d2b7a71c8aff1cbef661cd98155f736fb6..1a9875e19ea4e8fdcfcd506bc1bc59f6c09e22c7 100644
--- a/chrome/browser/chromeos/login/webui_screen_locker.h
+++ b/chrome/browser/chromeos/login/webui_screen_locker.h
@@ -37,6 +37,9 @@ class WebUIScreenLocker : public WebUILoginView,
  public:
   explicit WebUIScreenLocker(ScreenLocker* screen_locker);
 
+  // Called when the all inputs are grabbed.
+  void OnGrabInputs();
+
   // ScreenLockerDelegate implementation:
   virtual void LockScreen(bool unlock_on_input) OVERRIDE;
   virtual void ScreenLockReady() OVERRIDE;
@@ -69,9 +72,13 @@ class WebUIScreenLocker : public WebUILoginView,
  private:
   virtual ~WebUIScreenLocker();
 
+  // Called when the window manager is ready to handle locked state.
+  void OnWindowManagerReady();
+
   // Event handler for client-event.
   CHROMEGTK_CALLBACK_1(WebUIScreenLocker, void, OnClientEvent, GdkEventClient*)
 
+  // The screen locker window.
   views::Widget* lock_window_;
 
   // Login UI implementation instance.
@@ -80,6 +87,12 @@ class WebUIScreenLocker : public WebUILoginView,
   // Used for user image changed notifications.
   content::NotificationRegistrar registrar_;
 
+  // True if the screen locker's window has been drawn.
+  bool drawn_;
+
+  // True if both mouse input and keyboard input are grabbed.
+  bool input_grabbed_;
+
   DISALLOW_COPY_AND_ASSIGN(WebUIScreenLocker);
 };