Labels don't need to respond to mouse clicks and doing so can interfere with button clicks, for e...

views/controls/label.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/controls/label.h"
 
 #include <cmath>
 #include <limits>
 
 #include "base/i18n/rtl.h"
@@ skipping 197 matching lines @@
 
 void Label::OnEnabledChanged() {
   View::OnEnabledChanged();
   SetColor(IsEnabled() ? kEnabledColor : kDisabledColor);
 }
 
 std::string Label::GetClassName() const {
   return kViewClassName;
 }
 
+bool Label::HitTest(const gfx::Point& l) const {
+  return false;
+}
+
 void Label::OnMouseMoved(const MouseEvent& event) {
   UpdateContainsMouse(event);
 }
 
 void Label::OnMouseEntered(const MouseEvent& event) {
   UpdateContainsMouse(event);
 }
 
 void Label::OnMouseExited(const MouseEvent& event) {
   SetContainsMouse(false);
@@ skipping 224 matching lines @@
         font_, GetAvailableRect().width(), true));
   } else {
     *paint_text = UTF16ToWideHack(text_);
   }
 
   *text_bounds = GetTextBounds();
   *flags = ComputeMultiLineFlags();
 }
 
 }  // namespace views