Add KEEP_SIZE state to notification panel and fixed misc bugs.

chrome/browser/chromeos/notifications/balloon_view.h

Index: chrome/browser/chromeos/notifications/balloon_view.h
diff --git a/chrome/browser/chromeos/notifications/balloon_view.h b/chrome/browser/chromeos/notifications/balloon_view.h
index 61d9e1636d90e427cb0050b6c7d40ad952705c8f..b350b762a7c3fb7b302a3fd021533a57e90f4400 100644
--- a/chrome/browser/chromeos/notifications/balloon_view.h
+++ b/chrome/browser/chromeos/notifications/balloon_view.h
@@ -65,9 +65,6 @@ class BalloonViewImpl : public BalloonView,
   // True if the notification is sticky.
   bool sticky() { return sticky_; }
 
-  // True if the notification is closed by the dismiss button.
-  bool closed_by_user() { return closed_by_user_; }
-
  private:
   // views::View interface.
   virtual gfx::Size GetPreferredSize() {
@@ -123,8 +120,6 @@ class BalloonViewImpl : public BalloonView,
   bool sticky_;
   // True if a notification should have info/option/dismiss label/buttons.
   bool controls_;
-  // True if the notification is closed by the dismiss button.
-  bool closed_by_user_;
 
   DISALLOW_COPY_AND_ASSIGN(BalloonViewImpl);
 };