Add full support for filesystem URLs.

chrome/common/extensions/extension.cc

Index: chrome/common/extensions/extension.cc
diff --git a/chrome/common/extensions/extension.cc b/chrome/common/extensions/extension.cc
index a31d0b791c96d405fff679339506bb5cc536d5a7..85b313ffb49a4db4ecd46ab58283ad11a2fba70e 100644
--- a/chrome/common/extensions/extension.cc
+++ b/chrome/common/extensions/extension.cc
@@ -835,16 +835,24 @@ FileBrowserHandler* Extension::LoadFileBrowserHandler(
       return NULL;
     }
     StringToLowerASCII(&filter);
+    if (filter.substr(0, 10) != chrome::kFileSystemScheme ||
+        filter[10] != ':') {
+      *error = ExtensionErrorUtils::FormatErrorMessageUTF16(
+          errors::kInvalidURLPatternError, filter);
+      return NULL;
+    }
+    filter.replace(11, 0, "chrome-extension://*/");
     URLPattern pattern(URLPattern::SCHEME_FILESYSTEM);
+    pattern.SetValidInnerSchemes(URLPattern::SCHEME_EXTENSION);
     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, 2, "*.") == 0 &&
-         path.find_first_of('*', 2) == std::string::npos);
+    bool allowed = path == "/*" || path == "/*.*" ||
+        (path.compare(0, 3, "/*.") == 0 &&
+         path.find_first_of('*', 3) == std::string::npos);
     if (!allowed) {
       *error = ExtensionErrorUtils::FormatErrorMessageUTF16(
           errors::kInvalidURLPatternError, filter);