New FileSystemURL cracking

webkit/fileapi/isolated_context.cc

Index: webkit/fileapi/isolated_context.cc
diff --git a/webkit/fileapi/isolated_context.cc b/webkit/fileapi/isolated_context.cc
index 1433e7240b2dcdcc6010b760f2586dbe46a70cd4..601626083a9b766db60d3b9681c3abe3d6751c7c 100644
--- a/webkit/fileapi/isolated_context.cc
+++ b/webkit/fileapi/isolated_context.cc
@@ -12,6 +12,7 @@
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
+#include "webkit/fileapi/file_system_url.h"
 
 namespace fileapi {
 
@@ -230,6 +231,25 @@ bool IsolatedContext::RevokeFileSystem(const std::string& filesystem_id) {
   return UnregisterFileSystem(filesystem_id);
 }
 
+bool IsolatedContext::CanHandleURL(const FileSystemURL& url) const {
+  return url.is_valid() && url.type() == kFileSystemTypeIsolated;
+}
+
+FileSystemURL IsolatedContext::CrackURL(const FileSystemURL& url) const {
+  if (!CanHandleURL(url))
+    return FileSystemURL();
+
+  DCHECK(!url.is_cracked());
+
+  std::string mount_name;
+  FileSystemType type;
+  FilePath path;
+  if (!CrackVirtualPath(url.path(), &mount_name, &type, &path))
+    return FileSystemURL();
+
+  return FileSystemURL::CreateForCrackedURL(url, mount_name, type, path);
+}
+
 bool IsolatedContext::GetRegisteredPath(
     const std::string& filesystem_id, FilePath* path) const {
   DCHECK(path);