Implement media path filter

webkit/fileapi/obfuscated_file_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/fileapi/obfuscated_file_util.h"
 
 #include <queue>
 #include <string>
 #include <vector>
 
@@ skipping 942 matching lines @@
       return false;
   }
 
   FilePath origin_path = origin_type_path.DirName();
   DCHECK_EQ(origin_path.value(),
             GetDirectoryForOrigin(origin, false, NULL).value());
 
   // Delete the origin directory if the deleted one was the last remaining
   // type for the origin, i.e. if the *other* type doesn't exist.
   FileSystemType other_type = kFileSystemTypeUnknown;
-  switch (type) {
-    case kFileSystemTypeTemporary:
-      other_type = kFileSystemTypePersistent;
-      break;
-    case kFileSystemTypePersistent:
-      other_type = kFileSystemTypeTemporary;
-      break;
-    // These types shouldn't be used.
-    case kFileSystemTypeUnknown:
-    case kFileSystemTypeIsolated:
-    case kFileSystemTypeExternal:
-    case kFileSystemTypeTest:
-    case kFileSystemTypeDragged:
-      NOTREACHED();
-  }
+  if (type == kFileSystemTypeTemporary)
+    other_type = kFileSystemTypePersistent;
+  else if (type == kFileSystemTypePersistent)
+    other_type = kFileSystemTypeTemporary;
+  else
+    NOTREACHED();
+
   if (!file_util::DirectoryExists(
           origin_path.Append(GetDirectoryNameForType(other_type)))) {
     InitOriginDatabase(false);
     if (origin_database_.get())
       origin_database_->RemovePathForOrigin(GetOriginIdentifierFromURL(origin));
     if (!file_util::Delete(origin_path, true /* recursive */))
       return false;
   }
 
   // At this point we are sure we had successfully deleted the origin/type
@@ skipping 408 matching lines @@
   error = NativeFileUtil::CreateDirectory(
       new_local_path, false /* exclusive */, false /* recursive */);
   if (error != base::PLATFORM_FILE_OK)
     return error;
 
   *local_path = new_local_path.AppendASCII(StringPrintf("%08" PRId64, number));
   return base::PLATFORM_FILE_OK;
 }
 
 }  // namespace fileapi