SyncFS: Support resolveLocalFileSystemURL on SyncFileSystem

content/browser/fileapi/fileapi_message_filter.cc

Index: content/browser/fileapi/fileapi_message_filter.cc
diff --git a/content/browser/fileapi/fileapi_message_filter.cc b/content/browser/fileapi/fileapi_message_filter.cc
index 8025f40d73c978ea2ad4419104c2756d42279e50..f81340b459eed0bd1601fa39013e75bd1cf6d0da 100644
--- a/content/browser/fileapi/fileapi_message_filter.cc
+++ b/content/browser/fileapi/fileapi_message_filter.cc
@@ -38,6 +38,7 @@
 #include "webkit/common/blob/blob_data.h"
 #include "webkit/common/blob/shareable_file_reference.h"
 #include "webkit/common/fileapi/directory_entry.h"
+#include "webkit/common/fileapi/file_system_info.h"
 #include "webkit/common/fileapi/file_system_types.h"
 #include "webkit/common/fileapi/file_system_util.h"
 
@@ -161,6 +162,7 @@ bool FileAPIMessageFilter::OnMessageReceived(
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(FileAPIMessageFilter, message, *message_was_ok)
     IPC_MESSAGE_HANDLER(FileSystemHostMsg_Open, OnOpen)
+    IPC_MESSAGE_HANDLER(FileSystemHostMsg_ResolveURL, OnResolveURL)
     IPC_MESSAGE_HANDLER(FileSystemHostMsg_DeleteFileSystem, OnDeleteFileSystem)
     IPC_MESSAGE_HANDLER(FileSystemHostMsg_Move, OnMove)
     IPC_MESSAGE_HANDLER(FileSystemHostMsg_Copy, OnCopy)
@@ -241,6 +243,21 @@ void FileAPIMessageFilter::OnOpen(
       &FileAPIMessageFilter::DidOpenFileSystem, this, request_id));
 }
 
+void FileAPIMessageFilter::OnResolveURL(
+    int request_id,
+    const GURL& filesystem_url) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  base::PlatformFileError error;
+  FileSystemURL url(context_->CrackURL(filesystem_url));
+  if (!HasPermissionsForFile(url, fileapi::kReadFilePermissions, &error)) {
+    Send(new FileSystemMsg_DidFail(request_id, error));
+    return;
+  }
+
+  context_->ResolveURL(url, base::Bind(
+      &FileAPIMessageFilter::DidResolveURL, this, request_id));
+}
+
 void FileAPIMessageFilter::OnDeleteFileSystem(
     int request_id,
     const GURL& origin_url,
@@ -833,18 +850,35 @@ void FileAPIMessageFilter::DidWrite(int request_id,
 
 void FileAPIMessageFilter::DidOpenFileSystem(int request_id,
                                              base::PlatformFileError result,
-                                             const std::string& name,
+                                             const std::string& filesystem_name,
                                              const GURL& root) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   if (result == base::PLATFORM_FILE_OK) {
     DCHECK(root.is_valid());
-    Send(new FileSystemMsg_DidOpenFileSystem(request_id, name, root));
+    Send(new FileSystemMsg_DidOpenFileSystem(
+        request_id, filesystem_name, root));
   } else {
     Send(new FileSystemMsg_DidFail(request_id, result));
   }
   // For OpenFileSystem we do not create a new operation, so no unregister here.
 }
 
+void FileAPIMessageFilter::DidResolveURL(int request_id,
+                                         base::PlatformFileError result,
+                                         const fileapi::FileSystemInfo& info,
+                                         const base::FilePath& file_path,
+                                         bool is_directory) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  if (result == base::PLATFORM_FILE_OK) {
+    DCHECK(info.root_url.is_valid());
+    Send(new FileSystemMsg_DidResolveURL(
+        request_id, info, file_path, is_directory));
+  } else {
+    Send(new FileSystemMsg_DidFail(request_id, result));
+  }
+  // For ResolveURL we do not create a new operation, so no unregister here.
+}
+
 void FileAPIMessageFilter::DidDeleteFileSystem(
     int request_id,
     base::PlatformFileError result) {