Merge revision 449-452 changes:

- Linux: Fix window destruction crash.
- Linux: Fix cefclient shutdown crash.
- Remove WebURLRequestTest.CANCEL test with WUR_STATE_LOADING due to flakiness.
- Linux: Initialize the 'proxy_type' variable to make the compiler happy.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/963@454 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

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)
 {