| Index: third_party/WebKit/Source/core/html/HTMLMediaElement.cpp | 
| diff --git a/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp b/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp | 
| index 614c6ce029563ab390b6395af1f1e283eed2f81d..63ef61ca2a06a1e68c91240cb9bc8d7ff74d5038 100644 | 
| --- a/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp | 
| +++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.cpp | 
| @@ -3752,6 +3752,16 @@ void HTMLMediaElement::setInitialPlayWithoutUserGestures(bool value) | 
| m_initialPlayWithoutUserGesture = value; | 
| } | 
|  | 
| +void HTMLMediaElement::notifyPositionMayHaveChanged() | 
| +{ | 
| +    m_autoplayHelper.positionChanged(); | 
| +} | 
| + | 
| +void HTMLMediaElement::triggerAutoplayViewportCheck() | 
| +{ | 
| +    m_autoplayHelper.triggerAutoplayViewportCheck(); | 
| +} | 
| + | 
| #if ENABLE(WEB_AUDIO) | 
| void HTMLMediaElement::clearWeakMembers(Visitor* visitor) | 
| { | 
|  |