New FileSystemURL cracking

webkit/fileapi/mount_points.h

Index: webkit/fileapi/mount_points.h
diff --git a/webkit/fileapi/mount_points.h b/webkit/fileapi/mount_points.h
index 0cfb57b927682ea6f028fb80e44285def988c650..808316514a7dac39c4c1792596671a1cff6bef33 100644
--- a/webkit/fileapi/mount_points.h
+++ b/webkit/fileapi/mount_points.h
@@ -16,6 +16,10 @@
 class GURL;
 
 namespace fileapi {
+class FileSystemURL;
+}
+
+namespace fileapi {
 
 // Represents a set of mount points for File API.
 class WEBKIT_STORAGE_EXPORT MountPoints {
@@ -46,6 +50,17 @@ class WEBKIT_STORAGE_EXPORT MountPoints {
   // TODO(kinuko): Probably this should be rather named RevokeMountPoint.
   virtual bool RevokeFileSystem(const std::string& mount_name) = 0;
 
+  // Returns true if the given url is valid and MountPoints implementation can
+  // be used to crack FileSystemURLs with the url's type.
+  virtual bool CanHandleURL(const FileSystemURL& url) const = 0;
+
+  // Cracks a given FileSystemURL.
+  // If the the URL is not valid or does not belong to any of the mount points
+  // registered in this context, returns empty, invalid FileSystemURL.
+  // If the URL is successfully cracked, the returned URL will have |is_cracked|
+  // property set to true.
+  virtual FileSystemURL CrackURL(const FileSystemURL& url) const = 0;
+
   // Returns the mount point root path registered for a given |mount_name|.
   // Returns false if the given |mount_name| is not valid.
   virtual bool GetRegisteredPath(const std::string& mount_name,