[cros] Fix two issues related to gtk im context support.

chrome/browser/renderer_host/render_widget_host_view_gtk.cc

Index: chrome/browser/renderer_host/render_widget_host_view_gtk.cc
diff --git a/chrome/browser/renderer_host/render_widget_host_view_gtk.cc b/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
index 9d824fcd9f9b032b335f4480095c097c52c640f0..b14fdcbdefd8ae9ccf1df65f72f4e789a4cc7044 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
+++ b/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
@@ -200,6 +200,9 @@ class RenderWidgetHostViewGtkWidget {
     if (!host_view->is_showing_context_menu_)
       host_view->GetRenderWidgetHost()->Blur();
 
+    // Prevents us from stealing input context focus in OnGrabNotify() handler.
+    host_view->was_focused_before_grab_ = false;
+
     // Disable the GtkIMContext object.
     host_view->im_context_->OnFocusOut();