GTK: Adds #error statements to GTK code to root out unknown bots.

chrome/browser/ui/gtk/browser_window_gtk.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 95 matching lines @@
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/skia_utils_gtk.h"
 
 using content::NativeWebKeyboardEvent;
 using content::SSLStatus;
 using content::WebContents;
 using web_modal::WebContentsModalDialogHost;
 
+#error "The GTK+ port will be deleted later this week. If you are seeing this, you are trying to compile it. Please check your gyp flags for 'use_aura=0' and remove them."
+
 namespace {
 
 // The number of milliseconds between loading animation frames.
 const int kLoadingAnimationFrameTimeMs = 30;
 
 const char* kBrowserWindowKey = "__BROWSER_WINDOW_GTK__";
 
 // While resize areas on Windows are normally the same size as the window
 // borders, our top area is shrunk by 1 px to make it easier to move the window
 // around with our thinner top grabbable strip.  (Incidentally, our side and
@@ skipping 2249 matching lines @@
   BrowserWindowGtk* browser_window_gtk = new BrowserWindowGtk(browser);
   browser_window_gtk->Init();
   return browser_window_gtk;
 }
 
 // static
 chrome::HostDesktopType BrowserWindow::AdjustHostDesktopType(
     chrome::HostDesktopType desktop_type) {
   return desktop_type;
 }