[Webkit-unassigned] [Bug 157373] New: [CoordinatedGraphics] Some layers do not get clipped properly for drawing when clip region is empty.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157373

            Bug ID: 157373
           Summary: [CoordinatedGraphics] Some layers do not get clipped
                    properly for drawing when clip region is empty.
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit EFL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: enmi.lee at navercorp.com
                CC: demarchi at webkit.org

Created attachment 278166
  --> https://bugs.webkit.org/attachment.cgi?id=278166&action=review
Test html.

Some layers are drawn to the screen even though they have empty clip region because codes to check empty clip are missing.

Test html is attached.
- The red box should not be shown when scroll position is (0, 0).

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