[Webkit-unassigned] [Bug 143939] New: Web Inspector: assertion failure when editing inline styles

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=143939

            Bug ID: 143939
           Summary: Web Inspector: assertion failure when editing inline
                    styles
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tobi+bugzilla at basecode.de
                CC: graouts at webkit.org, joepeck at webkit.org,
                    jonowells at apple.com, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

Editing inline styles causes a cascade of procedures ending in `fetchedStyleSheetContent` which expects the CSSStyleSheet to have a valid URL. This is never the case since inline styles neither have a "sourceURL" nor a "parent frame". Actually it looks like using the `CSSStyleSheet` class for inline styles is not what http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-htmlelementcss-h3 specifies.

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