Fix Views Combobox and TreeView input minimally.

ui/views/controls/tree/tree_view.cc

 // Copyright (c) 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 "ui/views/controls/tree/tree_view.h"
 
 #include <algorithm>
 
 #include "base/i18n/rtl.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 580 matching lines @@
 
   int min_row = std::max(0, (min_y - kVerticalInset) / row_height_);
   int max_row = (max_y - kVerticalInset) / row_height_;
   if ((max_y - kVerticalInset) % row_height_ != 0)
     max_row++;
   int current_row = root_row();
   PaintRows(canvas, min_row, max_row, &root_, root_depth(), &current_row);
 }
 
 void TreeView::OnFocus() {
+  GetInputMethod()->OnFocus();
   View::OnFocus();
   SchedulePaintForNode(selected_node_);
 
   // Notify the InputMethod so that it knows to query the TextInputClient.
   if (GetInputMethod())
     GetInputMethod()->OnCaretBoundsChanged(this);
 }
 
 void TreeView::OnBlur() {
+  GetInputMethod()->OnBlur();
   SchedulePaintForNode(selected_node_);
   if (selector_)
     selector_->OnViewBlur();
 }
 
 bool TreeView::OnClickOrTap(const ui::LocatedEvent& event) {
   CommitEdit();
   RequestFocus();
 
   int row = (event.y() - kVerticalInset) / row_height_;
@@ skipping 392 matching lines @@
   if (!is_expanded_)
     return max_width;
   for (int i = 0; i < child_count(); ++i) {
     max_width = std::max(max_width,
                          GetChild(i)->GetMaxWidth(indent, depth + 1));
   }
   return max_width;
 }
 
 }  // namespace views