Delete the GTK+ port of Chrome.

content/browser/frame_host/render_widget_host_view_guest.cc

Index: content/browser/frame_host/render_widget_host_view_guest.cc
diff --git a/content/browser/frame_host/render_widget_host_view_guest.cc b/content/browser/frame_host/render_widget_host_view_guest.cc
index be692c8d8f1f4bbb06904833a25f2e69ddd26dea..00dcd41cbbf25158135a7bd3405159e75f48f06a 100644
--- a/content/browser/frame_host/render_widget_host_view_guest.cc
+++ b/content/browser/frame_host/render_widget_host_view_guest.cc
@@ -497,16 +497,6 @@ void RenderWidgetHostViewGuest::ShowDisambiguationPopup(
 }
 #endif  // defined(OS_ANDROID)
 
-#if defined(TOOLKIT_GTK)
-GdkEventButton* RenderWidgetHostViewGuest::GetLastMouseDown() {
-  return NULL;
-}
-
-gfx::NativeView RenderWidgetHostViewGuest::BuildInputMethodsGtkMenu() {
-  return platform_view_->BuildInputMethodsGtkMenu();
-}
-#endif  // defined(TOOLKIT_GTK)
-
 #if defined(OS_WIN)
 void RenderWidgetHostViewGuest::SetParentNativeViewAccessible(
     gfx::NativeViewAccessible accessible_parent) {