| Index: content/browser/compositor/delegated_frame_host.h
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| diff --git a/content/browser/compositor/delegated_frame_host.h b/content/browser/compositor/delegated_frame_host.h
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| index 0b294b61d3ebafba72cdfd7673fa480d70c20fe7..05197923e5b76fd3f8b08a1bd457121cf1b5fa71 100644
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| --- a/content/browser/compositor/delegated_frame_host.h
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| +++ b/content/browser/compositor/delegated_frame_host.h
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| @@ -153,6 +153,8 @@ class CONTENT_EXPORT DelegatedFrameHost
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|    void EndFrameSubscription();
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|    bool HasFrameSubscriber() const { return frame_subscriber_; }
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|    uint32_t GetSurfaceIdNamespace();
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| +  // Returns a null SurfaceId if this DelegatedFrameHost has not yet created
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| +  // a compositor Surface.
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|    cc::SurfaceId SurfaceIdAtPoint(const gfx::Point& point,
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|                                   gfx::Point* transformed_point);
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|  
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| 
 |