PPB_URLRequestInfo::AppendFileToBody using sync ipc

webkit/plugins/ppapi/mock_plugin_delegate.cc

Index: webkit/plugins/ppapi/mock_plugin_delegate.cc
diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.cc b/webkit/plugins/ppapi/mock_plugin_delegate.cc
index fb2d1a7bb7f7997a058dfec9fc26b7f283c555ef..543c21e464f96920d5a4aa400fde43757ac77d83 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.cc
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.cc
@@ -188,6 +188,13 @@ base::PlatformFileError MockPluginDelegate::GetDirContents(
   return base::PLATFORM_FILE_ERROR_FAILED;
 }
 
+void MockPluginDelegate::SyncGetFileSystemPlatformPath(
+    const GURL& url,
+    FilePath* platform_path) {
+  DCHECK(platform_path);
+  *platform_path = FilePath();
+}
+
 void MockPluginDelegate::PublishPolicy(const std::string& policy_json) {
 }