Switch cases that returns same value should use fall through.

chrome/browser/renderer_context_menu/render_view_context_menu.cc

 // Copyright 2014 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/renderer_context_menu/render_view_context_menu.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 1375 matching lines @@
     case IDC_CHECK_SPELLING_WHILE_TYPING:
       return prefs->GetBoolean(prefs::kEnableContinuousSpellcheck);
 
 #if !defined(OS_MACOSX) && defined(OS_POSIX)
     // TODO(suzhe): this should not be enabled for password fields.
     case IDC_INPUT_METHODS_MENU:
       return true;
 #endif
 
     case IDC_SPELLCHECK_MENU:
-      return true;
-
     case IDC_CONTENT_CONTEXT_OPENLINKWITH:
-      return true;
-
     case IDC_CONTENT_CONTEXT_PROTOCOL_HANDLER_SETTINGS:
-      return true;
-
     case IDC_CONTENT_CONTEXT_FORCESAVEPASSWORD:
       return true;
 
     case IDC_ROUTE_MEDIA: {
       DCHECK(switches::MediaRouterEnabled());
 
       // Disable the command if there is an active modal dialog.
       Browser* browser =
           chrome::FindBrowserWithWebContents(source_web_contents_);
       if (!browser || browser->profile()->IsOffTheRecord())
@@ skipping 567 matching lines @@
   source_web_contents_->GetRenderViewHost()->
       ExecuteMediaPlayerActionAtLocation(location, action);
 }
 
 void RenderViewContextMenu::PluginActionAt(
     const gfx::Point& location,
     const WebPluginAction& action) {
   source_web_contents_->GetRenderViewHost()->
       ExecutePluginActionAtLocation(location, action);
 }