Make MountPointProvider pluggable from outside webkit/fileapi

webkit/chromeos/fileapi/cros_mount_point_provider.cc

Index: webkit/chromeos/fileapi/cros_mount_point_provider.cc
diff --git a/webkit/chromeos/fileapi/cros_mount_point_provider.cc b/webkit/chromeos/fileapi/cros_mount_point_provider.cc
index 11cf6f778b76a6bc035035db8d0f13bb254dd68a..2533bfacd3a8731f928d88ca219a3c477e16aa8e 100644
--- a/webkit/chromeos/fileapi/cros_mount_point_provider.cc
+++ b/webkit/chromeos/fileapi/cros_mount_point_provider.cc
@@ -77,6 +77,19 @@ CrosMountPointProvider::CrosMountPointProvider(
 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,