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Unified Diff: cc/base/swap_promise.h

Issue 1013463003: Update from https://crrev.com/320931 (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: cc/base/swap_promise.h
diff --git a/cc/base/swap_promise.h b/cc/base/swap_promise.h
deleted file mode 100644
index a406fda6678b15bd6d59020699076601f529ab5e..0000000000000000000000000000000000000000
--- a/cc/base/swap_promise.h
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright 2013 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 CC_BASE_SWAP_PROMISE_H_
-#define CC_BASE_SWAP_PROMISE_H_
-
-#include "cc/output/compositor_frame_metadata.h"
-
-namespace cc {
-
-// When a change to the compositor's state/invalidation/whatever happens, a
-// Swap Promise can be inserted into LayerTreeHost/LayerTreeImpl, to track
-// whether the compositor's reply to the new state/invaliadtion/whatever is
-// completed in the compositor, i.e. the compositor knows it has been sent
-// to its output or not.
-//
-// If the new compositor state is sent to the output, SwapPromise::DidSwap()
-// will be called, and if the compositor fails to send its new state to the
-// output, SwapPromise::DidNotSwap() will be called.
-//
-// Client wishes to use SwapPromise should have a subclass that defines
-// the behavior of DidSwap() and DidNotSwap(). Notice that the promise can
-// be broken at either main or impl thread, e.g. commit fails on main thread,
-// new frame data has no actual damage so LayerTreeHostImpl::SwapBuffers()
-// bails out early on impl thread, so don't assume that DidSwap() and
-// DidNotSwap() are called at a particular thread. It is better to let the
-// subclass carry thread-safe member data and operate on that member data in
-// DidSwap() and DidNotSwap().
-class CC_EXPORT SwapPromise {
- public:
- enum DidNotSwapReason {
- DID_NOT_SWAP_UNKNOWN,
- SWAP_FAILS,
- COMMIT_FAILS,
- COMMIT_NO_UPDATE,
- };
-
- SwapPromise() {}
- virtual ~SwapPromise() {}
-
- virtual void DidSwap(CompositorFrameMetadata* metadata) = 0;
- virtual void DidNotSwap(DidNotSwapReason reason) = 0;
-
- // A non-zero trace id identifies a trace flow object that is embedded in the
- // swap promise. This can be used for registering additional flow steps to
- // visualize the object's path through the system.
- virtual int64 TraceId() const = 0;
-};
-
-} // namespace cc
-
-#endif // CC_BASE_SWAP_PROMISE_H_
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