experiment with -Wimplicit-fallthrough

webkit/common/fileapi/file_system_util.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 "webkit/common/fileapi/file_system_util.h"
 
 #include <algorithm>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 240 matching lines @@
       return "Syncable";
     case kFileSystemTypeNativeForPlatformApp:
       return "NativeForPlatformApp";
     case kFileSystemTypeForTransientFile:
       return "TransientFile";
     case kFileSystemTypePluginPrivate:
       return "PluginPrivate";
     case kFileSystemInternalTypeEnumStart:
     case kFileSystemInternalTypeEnumEnd:
       NOTREACHED();
-      // Fall through.
+      FALLTHROUGH_INTENDED;
     case kFileSystemTypeUnknown:
       return "Unknown";
   }
   NOTREACHED();
   return std::string();
 }
 
 std::string FilePathToString(const base::FilePath& file_path) {
 #if defined(OS_WIN)
   return base::UTF16ToUTF8(file_path.value());
@@ skipping 174 matching lines @@
 #if defined(OS_CHROMEOS)
 FileSystemInfo GetFileSystemInfoForChromeOS(const GURL& origin_url) {
   FileSystemType mount_type = fileapi::kFileSystemTypeExternal;
   return FileSystemInfo(fileapi::GetFileSystemName(origin_url, mount_type),
                         fileapi::GetFileSystemRootURI(origin_url, mount_type),
                         mount_type);
 }
 #endif
 
 }  // namespace fileapi