Destroy tooltip manager if the native window is destroyed.

Also revert the previous attempt to fix this issue:

Revert "Aura build fix: Make TooltipManagerViews an observer of parent Widget and"

This reverts commit 67498136.

BUG=none
TEST=none


Review URL: http://codereview.chromium.org/8418028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107776 0039d316-1c4b-4281-b951-d872f2087c98

views/widget/native_widget_aura.cc

@@ -540,6 +540,9 @@ void NativeWidgetAura::OnPaint(gfx::Canvas* canvas) {
 
 void NativeWidgetAura::OnWindowDestroying() {
   delegate_->OnNativeWidgetDestroying();
+
+  // If the aura::Window is destroyed, we can no longer show tooltips.
+  tooltip_manager_.reset();
 }
 
 void NativeWidgetAura::OnWindowDestroyed() {

views/widget/tooltip_manager_views.cc

@@ -75,8 +75,7 @@ int TooltipManager::GetMaxWidth(int x, int y) {
 
 TooltipManagerViews::TooltipManagerViews(views::View* root_view)
     : root_view_(root_view),
-      tooltip_view_(NULL),
-      widget_closed_(false) {
+      tooltip_view_(NULL) {
   tooltip_label_.set_background(
       views::Background::CreateSolidBackground(kTooltipBackground));
   tooltip_widget_.reset(CreateTooltip());
@@ -87,7 +86,6 @@ TooltipManagerViews::TooltipManagerViews(views::View* root_view)
       base::TimeDelta::FromMilliseconds(kTooltipTimeoutMs),
       this, &TooltipManagerViews::TooltipTimerFired);
   MessageLoopForUI::current()->AddObserver(this);
-  root_view_->GetWidget()->AddObserver(this);
 }
 
 TooltipManagerViews::~TooltipManagerViews() {
@@ -152,11 +150,6 @@ void TooltipManagerViews::DidProcessEvent(const base::NativeEvent& event) {
 }
 #endif
 
-void TooltipManagerViews::OnWidgetClosing(Widget* widget) {
-  tooltip_timer_.Stop();
-  widget_closed_ = true;
-}
-
 void TooltipManagerViews::TooltipTimerFired() {
   UpdateIfRequired(curr_mouse_pos_.x(), curr_mouse_pos_.y(), false);
 }
@@ -179,9 +172,6 @@ View* TooltipManagerViews::GetViewForTooltip(int x, int y, bool for_keyboard) {
 }
 
 void TooltipManagerViews::UpdateIfRequired(int x, int y, bool for_keyboard) {
-  if (widget_closed_)
-    return;
-
   View* view = GetViewForTooltip(x, y, for_keyboard);
   string16 tooltip_text;
   if (view)

views/widget/tooltip_manager_views.h

@@ -27,8 +27,7 @@ class Widget;
 
 // TooltipManager implementation for Views.
 class TooltipManagerViews : public TooltipManager,
-                            public MessageLoopForUI::Observer,
-                            public Widget::Observer {
+                            public MessageLoopForUI::Observer {
  public:
   explicit TooltipManagerViews(views::View* root_view);
   virtual ~TooltipManagerViews();
@@ -49,9 +48,6 @@ class TooltipManagerViews : public TooltipManager,
   virtual void DidProcessEvent(const base::NativeEvent& event) OVERRIDE;
 #endif
 
-  // Widget::Observer
-  virtual void OnWidgetClosing(Widget* widget) OVERRIDE;
-
  private:
   void TooltipTimerFired();
   View* GetViewForTooltip(int x, int y, bool for_keyboard);
@@ -84,9 +80,6 @@ class TooltipManagerViews : public TooltipManager,
   gfx::Point curr_mouse_pos_;
   base::RepeatingTimer<TooltipManagerViews> tooltip_timer_;
 
-  // true when the widget that owns us has closed.
-  bool widget_closed_;
-
   DISALLOW_COPY_AND_ASSIGN(TooltipManagerViews);
 };