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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All Rights Reserved. | 2 * Copyright (C) 2013 Google Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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24 */ | 24 */ |
25 | 25 |
26 #ifndef PageVisibilityNotifier_h | 26 #ifndef PageVisibilityNotifier_h |
27 #define PageVisibilityNotifier_h | 27 #define PageVisibilityNotifier_h |
28 | 28 |
29 #include "core/CoreExport.h" | 29 #include "core/CoreExport.h" |
30 #include "platform/LifecycleNotifier.h" | 30 #include "platform/LifecycleNotifier.h" |
31 | 31 |
32 namespace blink { | 32 namespace blink { |
33 | 33 |
34 class LocalFrame; | |
35 class Page; | 34 class Page; |
36 class PageVisibilityObserver; | 35 class PageVisibilityObserver; |
37 | 36 |
38 class CORE_EXPORT PageVisibilityNotifier | 37 class CORE_EXPORT PageVisibilityNotifier |
39 : public LifecycleNotifier<Page, PageVisibilityObserver> { | 38 : public LifecycleNotifier<Page, PageVisibilityObserver> { |
40 public: | 39 public: |
41 void notifyPageVisibilityChanged(); | 40 void notifyPageVisibilityChanged(); |
42 }; | 41 }; |
43 | 42 |
44 } // namespace blink | 43 } // namespace blink |
45 | 44 |
46 #endif // PageVisibilityNotifier_h | 45 #endif // PageVisibilityNotifier_h |
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