Linux: Fix window destruction crash.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@449 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser_impl.cc

@@ -786,8 +786,11 @@ void CefBrowserImpl::UIT_DestroyBrowser()
   }
 
   // Clean up anything associated with the WebViewHost widget.
-  UIT_GetWebViewHost()->webwidget()->close();
-  webviewhost_.reset();
+  if (webviewhost_.get()) {
+    if (webviewhost_->webwidget())
+      webviewhost_->webwidget()->close();
+    webviewhost_.reset();
+  }
 
   // Remove the reference to the window handle.
   UIT_ClearMainWndHandle();

libcef/browser_impl_gtk.cc

@@ -18,6 +18,14 @@
 using WebKit::WebRect;
 using WebKit::WebSize;
 
+namespace {
+
+void window_destroyed(GtkWidget* widget, CefBrowserImpl* browser) {
+  browser->UIT_DestroyBrowser();
+}
+
+} // namespace
+
 void CefBrowserImpl::ParentWindowWillClose()
 {
   // TODO(port): Implement this method if necessary.
@@ -89,6 +97,8 @@ bool CefBrowserImpl::UIT_CreateBrowser(const CefString& url)
     dev_tools_agent_->SetWebView(webviewhost_->webview());
 
   window_info_.m_Widget = webviewhost_->view_handle();
+  g_signal_connect(G_OBJECT(window_info_.m_Widget), "destroy",
+                   G_CALLBACK(window_destroyed), this);
 
   Unlock();
 
@@ -181,11 +191,8 @@ int CefBrowserImpl::UIT_GetPagesCount(WebKit::WebFrame* frame)
 // static
 void CefBrowserImpl::UIT_CloseView(gfx::NativeView view)
 {
-  GtkWidget* window =
-      gtk_widget_get_parent(gtk_widget_get_parent(GTK_WIDGET(view)));
-  
-  MessageLoop::current()->PostTask(FROM_HERE, NewRunnableFunction(
-      &gtk_widget_destroy, GTK_WIDGET(window)));
+  GtkWidget* window = gtk_widget_get_toplevel(GTK_WIDGET(view));
+  gtk_widget_destroy(window);
 }
 
 // static

libcef/webwidget_host.h

@@ -194,7 +194,6 @@ class WebWidgetHost {
   // ---------------------------------------------------------------------------
   static gfx::NativeView CreateWidget(gfx::NativeView parent_view,
                                       WebWidgetHost* host);
-  void WindowDestroyed();
   void Resize(const gfx::Size& size);
   virtual void KeyEvent(GdkEventKey* event);
 #endif

libcef/webwidget_host_gtk.cc

@@ -84,8 +84,6 @@ class WebWidgetHostGtkWidget {
                      G_CALLBACK(&HandleConfigure), host);
     g_signal_connect(widget, "expose-event",
                      G_CALLBACK(&HandleExpose), host);
-    g_signal_connect(widget, "destroy",
-                     G_CALLBACK(&HandleDestroy), host);
     g_signal_connect(widget, "key-press-event",
                      G_CALLBACK(&HandleKeyPress), host);
     g_signal_connect(widget, "key-release-event",
@@ -154,16 +152,6 @@ class WebWidgetHostGtkWidget {
     return FALSE;
   }
 
-  // The GdkWindow was destroyed.
-  static gboolean HandleDestroy(GtkWidget* widget, void* unused) {
-    // The associated WebWidgetHost instance may have already been destroyed.
-    WebWidgetHost* host = static_cast<WebWidgetHost*>(
-        g_object_get_data(G_OBJECT(widget), kWebWidgetHostKey));
-    if (host)
-      host->WindowDestroyed();
-    return FALSE;
-  }
-
   // Keyboard key pressed.
   static gboolean HandleKeyPress(GtkWidget* widget,
                                  GdkEventKey* event,
@@ -455,10 +443,6 @@ void WebWidgetHost::PaintRect(const gfx::Rect& rect) {
   set_painting(false);
 }
 
-void WebWidgetHost::WindowDestroyed() {
-  delete this;
-}
-
 void WebWidgetHost::SendKeyEvent(cef_key_type_t type, int key, int modifiers,
                                  bool sysChar, bool imeChar)
 {