breaks down osr api to separate files

atom/browser/osr_output_device.h

@@ -0,0 +1,54 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_OSR_OUTPUT_DEVICE_H_
+#define ATOM_BROWSER_OSR_OUTPUT_DEVICE_H_
+
+// #include "content/browser/renderer_host/render_widget_host_view_base.h"
+// #include "content/browser/renderer_host/delegated_frame_host.h"
+// #include "content/browser/renderer_host/resize_lock.h"
+// #include "third_party/WebKit/public/platform/WebVector.h"
+// #include "cc/scheduler/begin_frame_source.h"
+// #include "content/browser/renderer_host/render_widget_host_impl.h"
+// #include "cc/output/compositor_frame.h"
+// #include "ui/gfx/geometry/point.h"
+// #include "base/threading/thread.h"
+// #include "ui/compositor/compositor.h"
+// #include "ui/compositor/layer_delegate.h"
+// #include "ui/compositor/layer_owner.h"
+// #include "ui/base/ime/text_input_client.h"
+
+#include "cc/output/software_output_device.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkCanvas.h"
+
+#include "content/browser/web_contents/web_contents_view.h"
+
+namespace atom {
+
+class OffScreenOutputDevice : public cc::SoftwareOutputDevice {
+public:
+  OffScreenOutputDevice();
+  ~OffScreenOutputDevice();
+
+
+  // void saveSkBitmapToBMPFile(const SkBitmap& skBitmap, const char* path);
+  void Resize(const gfx::Size& pixel_size, float scale_factor) override;
+
+  SkCanvas* BeginPaint(const gfx::Rect& damage_rect) override;
+
+  void EndPaint() override;
+
+private:
+  std::unique_ptr<SkCanvas> canvas_;
+  std::unique_ptr<SkBitmap> bitmap_;
+  gfx::Rect pending_damage_rect_;
+
+  DISALLOW_COPY_AND_ASSIGN(OffScreenOutputDevice);
+};
+
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_OSR_OUTPUT_DEVICE_H_