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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/surfaces/surface_id_allocator.h" | 5 #include "cc/surfaces/surface_id_allocator.h" |
6 | 6 |
7 #include <stdint.h> | 7 #include <stdint.h> |
8 | 8 |
9 #include "base/rand_util.h" | 9 #include "base/rand_util.h" |
| 10 #include "base/unguessable_token.h" |
10 | 11 |
11 namespace cc { | 12 namespace cc { |
12 | 13 |
13 SurfaceIdAllocator::SurfaceIdAllocator() : next_id_(1u) {} | 14 SurfaceIdAllocator::SurfaceIdAllocator() : next_id_(1u) {} |
14 | 15 |
15 SurfaceIdAllocator::~SurfaceIdAllocator() { | 16 SurfaceIdAllocator::~SurfaceIdAllocator() { |
16 } | 17 } |
17 | 18 |
18 LocalFrameId SurfaceIdAllocator::GenerateId() { | 19 LocalFrameId SurfaceIdAllocator::GenerateId() { |
19 uint64_t nonce = base::RandUint64(); | 20 LocalFrameId id(next_id_, base::UnguessableToken::Create()); |
20 LocalFrameId id(next_id_, nonce); | |
21 next_id_++; | 21 next_id_++; |
22 return id; | 22 return id; |
23 } | 23 } |
24 | 24 |
25 } // namespace cc | 25 } // namespace cc |
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