GLFrameData: Remove dead code

content/test/mailbox_output_surface.h

Index: content/test/mailbox_output_surface.h
diff --git a/content/test/mailbox_output_surface.h b/content/test/mailbox_output_surface.h
deleted file mode 100644
index ac04f8b341cc7de6ec02f474a6ed87a929f35e64..0000000000000000000000000000000000000000
--- a/content/test/mailbox_output_surface.h
+++ /dev/null
@@ -1,84 +0,0 @@
-// Copyright 2016 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.
-
-#ifndef CONTENT_TEST_MAILBOX_OUTPUT_SURFACE_H_
-#define CONTENT_TEST_MAILBOX_OUTPUT_SURFACE_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <queue>
-
-#include "base/memory/ref_counted.h"
-#include "cc/output/output_surface.h"
-#include "cc/resources/resource_format.h"
-#include "cc/resources/transferable_resource.h"
-#include "ui/gfx/geometry/size.h"
-
-namespace cc {
-class CompositorFrameAck;
-class ContextProvider;
-class GLFrameData;
-}
-
-namespace content {
-class FrameSwapMessageQueue;
-
-// Implementation of CompositorOutputSurface that renders to textures which
-// are sent to the browser through the mailbox extension.
-// This class can be created only on the main thread, but then becomes pinned
-// to a fixed thread when bindToClient is called.
-class MailboxOutputSurface : public cc::OutputSurface {
- public:
-  MailboxOutputSurface(
-      uint32_t output_surface_id,
-      scoped_refptr<cc::ContextProvider> context_provider,
-      scoped_refptr<cc::ContextProvider> worker_context_provider);
-  ~MailboxOutputSurface() override;
-
-  // cc::OutputSurface implementation.
-  bool BindToClient(cc::OutputSurfaceClient* client) override;
-  void DetachFromClient() override;
-  void EnsureBackbuffer() override;
-  void DiscardBackbuffer() override;
-  void Reshape(const gfx::Size& size, float scale_factor, bool alpha) override;
-  void BindFramebuffer() override;
-  uint32_t GetFramebufferCopyTextureFormat() override;
-  void SwapBuffers(cc::CompositorFrame frame) override;
-
- private:
-  void ShortcutSwapAck(uint32_t output_surface_id,
-                       std::unique_ptr<cc::GLFrameData> gl_frame_data);
-  void OnSwapAck(uint32_t output_surface_id, const cc::CompositorFrameAck& ack);
-
-  size_t GetNumAcksPending();
-
-  struct TransferableFrame {
-    TransferableFrame();
-    TransferableFrame(uint32_t texture_id,
-                      const gpu::Mailbox& mailbox,
-                      const gfx::Size size);
-
-    uint32_t texture_id;
-    gpu::Mailbox mailbox;
-    gpu::SyncToken sync_token;
-    gfx::Size size;
-  };
-
-  const uint32_t output_surface_id_;
-
-  TransferableFrame current_backing_;
-  std::deque<TransferableFrame> pending_textures_;
-  std::queue<TransferableFrame> returned_textures_;
-
-  uint32_t fbo_;
-  bool is_backbuffer_discarded_;
-
-  std::unique_ptr<cc::CompositorFrameAck> previous_frame_ack_;
-  base::WeakPtrFactory<MailboxOutputSurface> weak_ptrs_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_TEST_MAILBOX_OUTPUT_SURFACE_H_