mojo: Get mojo:leveldb and mojo:filesystem compiled into content.

components/filesystem/file_system_impl.h

Index: components/filesystem/file_system_impl.h
diff --git a/components/filesystem/file_system_impl.h b/components/filesystem/file_system_impl.h
index 11ac05d96e554e80d905fca6d28ac12cdfe41aa1..4c18dd562cfe39aff61b94c69f98275f62e6f8d7 100644
--- a/components/filesystem/file_system_impl.h
+++ b/components/filesystem/file_system_impl.h
@@ -25,8 +25,7 @@ class LockTable;
 
 class FileSystemImpl : public FileSystem {
  public:
-  FileSystemImpl(FileSystemApp* app,
-                 mojo::Connection* connection,
+  FileSystemImpl(mojo::Connection* connection,
                  mojo::InterfaceRequest<FileSystem> request,
                  LockTable* lock_table);
   ~FileSystemImpl() override;
@@ -52,7 +51,6 @@ class FileSystemImpl : public FileSystem {
   void BuildSanitizedOrigin(const std::string& origin,
                             std::string* sanitized_origin);
 
-  FileSystemApp* app_;
   const std::string remote_application_url_;
   mojo::StrongBinding<FileSystem> binding_;
   LockTable* lock_table_;