blob: 3118325edfc82a66a4eda4bd108d5f9cc21ef3b0 [file] [log] [blame]
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "extensions/browser/preload_check.h"
namespace content {
class GpuFeatureChecker;
namespace extensions {
class Extension;
// Validates the 'requirements' extension manifest field. This is an
// asynchronous process that involves several threads, but the public interface
// of this class (including constructor and destructor) must only be used on
// the UI thread.
class RequirementsChecker : public PreloadCheck {
explicit RequirementsChecker(scoped_refptr<const Extension> extension);
~RequirementsChecker() override;
// PreloadCheck:
void Start(ResultCallback callback) override;
// Joins multiple errors into a space-separated string.
base::string16 GetErrorMessage() const override;
// Callback for the GpuFeatureChecker.
void VerifyWebGLAvailability(bool available);
// Helper function to post a task on the UI thread to call RunCallback().
void PostRunCallback();
// Helper function to run the callback.
void RunCallback();
scoped_refptr<content::GpuFeatureChecker> webgl_checker_;
ResultCallback callback_;
Errors errors_;
base::WeakPtrFactory<RequirementsChecker> weak_ptr_factory_;
} // namespace extensions