Make MountPointProvider pluggable from outside webkit/fileapi

webkit/chromeos/fileapi/cros_mount_point_provider.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/chromeos/fileapi/cros_mount_point_provider.h"
 
 #include "base/chromeos/chromeos_version.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
@@ skipping 59 matching lines @@
       chromeos::CrosDisksClient::GetRemovableDiskMountPoint());
   system_mount_points_->RegisterFileSystem(
       "oem",
       fileapi::kFileSystemTypeRestrictedNativeLocal,
       base::FilePath(FILE_PATH_LITERAL("/usr/share/oem")));
 }
 
 CrosMountPointProvider::~CrosMountPointProvider() {
 }
 
+bool CrosMountPointProvider::CanHandleType(fileapi::FileSystemType type) const {
+  switch (type) {
+    case fileapi::kFileSystemTypeExternal:
+    case fileapi::kFileSystemTypeDrive:
+    case fileapi::kFileSystemTypeRestrictedNativeLocal:
+    case fileapi::kFileSystemTypeNativeLocal:
+    case fileapi::kFileSystemTypeNativeForPlatformApp:
+      return true;
+    default:
+      return false;
+  }
+}
+
 void CrosMountPointProvider::ValidateFileSystemRoot(
     const GURL& origin_url,
     fileapi::FileSystemType type,
     bool create,
     const ValidateFileSystemCallback& callback) {
   DCHECK(fileapi::IsolatedContext::IsIsolatedType(type));
   // Nothing to validate for external filesystem.
   callback.Run(base::PLATFORM_FILE_OK);
 }
 
@@ skipping 237 matching lines @@
 fileapi::RemoteFileSystemProxyInterface* CrosMountPointProvider::GetRemoteProxy(
     const std::string& mount_name) const {
   fileapi::RemoteFileSystemProxyInterface* proxy =
       mount_points_->GetRemoteFileSystemProxy(mount_name);
   if (proxy)
     return proxy;
   return system_mount_points_->GetRemoteFileSystemProxy(mount_name);
 }
 
 }  // namespace chromeos