FileAPI: Add WebFileSystem::resolveURL

Source/modules/filesystem/FileSystemCallbacks.cpp

Index: Source/modules/filesystem/FileSystemCallbacks.cpp
diff --git a/Source/modules/filesystem/FileSystemCallbacks.cpp b/Source/modules/filesystem/FileSystemCallbacks.cpp
index c2891784f1a0dc3e4e07967daea7bfc41505e657..a6dfafa4a121b807ae7658180324851a8d4d7f55 100644
--- a/Source/modules/filesystem/FileSystemCallbacks.cpp
+++ b/Source/modules/filesystem/FileSystemCallbacks.cpp
@@ -216,6 +216,24 @@ void ResolveURICallbacks::didOpenFileSystem(const String& name, const KURL& root
     root->getDirectory(m_filePath, Dictionary(), m_successCallback, ErrorCallbackWrapper::create(m_successCallback, m_errorCallback, root, m_filePath));
 }
 
+void ResolveURICallbacks::didResolveURL(const String& name, const KURL& rootURL, const String& filePath, bool isDirectory, PassOwnPtr<AsyncFileSystem> asyncFileSystem)
+{
+    ASSERT(asyncFileSystem);
+
+    RefPtr<DOMFileSystem> filesystem = DOMFileSystem::create(m_scriptExecutionContext.get(), name, m_type, rootURL, asyncFileSystem);
+    RefPtr<DirectoryEntry> root = filesystem->root();
+
+    String absolutePath;
+    if (!DOMFileSystemBase::pathToAbsolutePath(m_type, root.get(), filePath, absolutePath))
+        filesystem->scheduleCallback(m_errorCallback.release(), FileError::create(FileError::INVALID_MODIFICATION_ERR));
+
+    if (isDirectory)
+        m_successCallback->handleEvent(DirectoryEntry::create(filesystem, absolutePath).get());
+    else
+        m_successCallback->handleEvent(FileEntry::create(filesystem, absolutePath).get());
+    m_successCallback.clear();
+}
+
 // MetadataCallbacks ----------------------------------------------------------
 
 PassOwnPtr<MetadataCallbacks> MetadataCallbacks::create(PassRefPtr<MetadataCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)