Chromium build failed with heap leak checker, or configured with

chrome/browser/gtk/browser_window_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 "chrome/browser/gtk/browser_window_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include <string>
 
@@ skipping 2167 matching lines @@
     // Right edge.
     if (y < kResizeAreaCornerSize - kTopResizeAdjust) {
       *edge = GDK_WINDOW_EDGE_NORTH_EAST;
     } else if (y < bounds_.height() - kResizeAreaCornerSize) {
       *edge = GDK_WINDOW_EDGE_EAST;
     } else {
       *edge = GDK_WINDOW_EDGE_SOUTH_EAST;
     }
     return true;
   }
+
   NOTREACHED();
+  return false;
 }
 
 bool BrowserWindowGtk::UseCustomFrame() {
   // We don't use the custom frame for app mode windows or app window popups.
   return use_custom_frame_pref_.GetValue() &&
       browser_->type() != Browser::TYPE_APP &&
       browser_->type() != Browser::TYPE_APP_POPUP;
 }
 
 bool BrowserWindowGtk::BoundsMatchMonitorSize() {
@@ skipping 43 matching lines @@
   // special-case the ones where the custom frame should be used.  These names
   // are taken from the WMs' source code.
   return (wm_name == "Blackbox" ||
           wm_name == "compiz" ||
           wm_name == "e16" ||  // Enlightenment DR16
           wm_name == "Metacity" ||
           wm_name == "Mutter" ||
           wm_name == "Openbox" ||
           wm_name == "Xfwm4");
 }