Possible fix for the issue that keyboard doesn't show up.

views/widget/native_widget_gtk.cc

 // Copyright (c) 2011 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 "views/widget/native_widget_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #include <X11/extensions/shape.h>
 #include <X11/Xatom.h>
@@ skipping 956 matching lines @@
   if (views::Widget::IsPureViews()) {
 #if defined(HAVE_IBUS)
     InputMethod* input_method =
         InputMethodIBus::IsInputMethodIBusEnabled() ?
         static_cast<InputMethod*>(new InputMethodIBus(this)) :
         static_cast<InputMethod*>(new InputMethodGtk(this));
 #else
     InputMethod* input_method = new InputMethodGtk(this);
 #endif
     input_method->Init(GetWidget());
-    if (has_focus_)
-      input_method->OnFocus();
     return input_method;
   }
   // GTK's textfield handles IME.
   return NULL;
 }
 
 void NativeWidgetGtk::CenterWindow(const gfx::Size& size) {
   gfx::Rect center_rect;
 
   GtkWindow* parent = gtk_window_get_transient_for(GetNativeWindow());
@@ skipping 647 matching lines @@
   if (has_focus_)
     return false;  // This is the second focus-in event in a row, ignore it.
   has_focus_ = true;
 
   should_handle_menu_key_release_ = false;
 
   if (!GetWidget()->is_top_level())
     return false;
 
   // Only top-level Widget should have an InputMethod instance.
-  InputMethod* input_method = GetWidget()->GetInputMethodDirect();
+  InputMethod* input_method = GetWidget()->GetInputMethod();
   if (input_method)
     input_method->OnFocus();
 
   // See description of got_initial_focus_in_ for details on this.
   if (!got_initial_focus_in_) {
     got_initial_focus_in_ = true;
     // Sets initial focus here. On X11/Gtk, window creation
     // is asynchronous and a focus request has to be made after a window
     // gets created.
     GetWidget()->SetInitialFocus();
   }
   return false;
 }
 
 gboolean NativeWidgetGtk::OnFocusOut(GtkWidget* widget, GdkEventFocus* event) {
   if (!has_focus_)
     return false;  // This is the second focus-out event in a row, ignore it.
   has_focus_ = false;
 
   if (!GetWidget()->is_top_level())
     return false;
 
   // Only top-level Widget should have an InputMethod instance.
-  InputMethod* input_method = GetWidget()->GetInputMethodDirect();
+  InputMethod* input_method = GetWidget()->GetInputMethod();
   if (input_method)
     input_method->OnBlur();
   return false;
 }
 
 gboolean NativeWidgetGtk::OnEventKey(GtkWidget* widget, GdkEventKey* event) {
   KeyEvent key(reinterpret_cast<NativeEvent>(event));
-  InputMethod* input_method = GetWidget()->GetInputMethodDirect();
+  InputMethod* input_method = GetWidget()->GetInputMethod();
   if (input_method)
     input_method->DispatchKeyEvent(key);
   else
     DispatchKeyEventPostIME(key);
 
   // Returns true to prevent GtkWindow's default key event handler.
   return true;
 }
 
 gboolean NativeWidgetGtk::OnQueryTooltip(GtkWidget* widget,
@@ skipping 556 matching lines @@
     button_pressed = event->type == GDK_BUTTON_PRESS ||
         event->type == GDK_2BUTTON_PRESS ||
         event->type == GDK_3BUTTON_PRESS;
     gdk_event_free(event);
   }
   return button_pressed;
 }
 
 }  // namespace internal
 }  // namespace views