[Webkit-unassigned] [Bug 153352] New: Overlay scrollbars should always use the whole contents

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=153352

            Bug ID: 153352
           Summary: Overlay scrollbars should always use the whole
                    contents
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: cgarcia at igalia.com
                CC: bdakin at apple.com, darin at apple.com,
                    simon.fraser at apple.com

They are currently respecting the scroll corner. In the case of main frame scrollbars we are indeed returning an empty rectangle from ScrollView::scrollCornerRect() when using overlay scrollbars, but when calculating the size of the scrollbars we are using the actual width/height instead of the occupied with/height. For other scrollbars RenderLayer::scrollCornerRect() is not checking whether scrollbars are overlay or not and we are always returning a scroll corner rectangle when scrollbars are present.

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