Revert 128753 - Add full support for filesystem URLs.

chrome/common/extensions/extension.cc

Index: chrome/common/extensions/extension.cc
===================================================================
--- chrome/common/extensions/extension.cc	(revision 128756)
+++ chrome/common/extensions/extension.cc	(working copy)
@@ -2326,27 +2326,16 @@
       return NULL;
     }
     StringToLowerASCII(&filter);
-    if (!StartsWithASCII(filter,
-                         std::string(chrome::kFileSystemScheme) + ':',
-                         true)) {
-      *error = ExtensionErrorUtils::FormatErrorMessageUTF16(
-          errors::kInvalidURLPatternError, filter);
-      return NULL;
-    }
-    // The user inputs filesystem:*; we don't actually implement scheme
-    // wildcards in URLPattern, so transform to what will match correctly.
-    filter.replace(0, 11, "chrome-extension://*/");
-    URLPattern pattern(URLPattern::SCHEME_EXTENSION);
-    pattern.set_partial_filesystem_support_hack(true);
+    URLPattern pattern(URLPattern::SCHEME_FILESYSTEM);
     if (pattern.Parse(filter) != URLPattern::PARSE_SUCCESS) {
       *error = ExtensionErrorUtils::FormatErrorMessageUTF16(
           errors::kInvalidURLPatternError, filter);
       return NULL;
     }
     std::string path = pattern.path();
-    bool allowed = path == "/*" || path == "/*.*" ||
-        (path.compare(0, 3, "/*.") == 0 &&
-         path.find_first_of('*', 3) == std::string::npos);
+    bool allowed = path == "*" || path == "*.*" ||
+        (path.compare(0, 2, "*.") == 0 &&
+         path.find_first_of('*', 2) == std::string::npos);
     if (!allowed) {
       *error = ExtensionErrorUtils::FormatErrorMessageUTF16(
           errors::kInvalidURLPatternError, filter);