/usr/share/doc/libwebkit2gtk-3.0-dev/html/ is in libwebkit2gtk-3.0-dev 2.4.10-0ubuntu0.14.04.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitAuthenticationRequest.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitBackForwardList.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitBackForwardListItem.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitCertificateInfo.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitContextMenu.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitContextMenuItem.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitCookieManager.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitDownload.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitFaviconDatabase.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitFileChooserRequest.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitFindController.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitFormSubmissionRequest.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitFrame.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitGeolocationPermissionRequest.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitHitTestResult.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitNavigationPolicyDecision.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitPermissionRequest.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitPlugin.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitPolicyDecision.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitPrintOperation.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitResponsePolicyDecision.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitScriptWorld.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitSecurityManager.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitSettings.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitURIRequest.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitURIResponse.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitURISchemeRequest.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWebContext.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWebExtension.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWebInspector.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWebPage.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWebResource.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWebView.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWebViewGroup.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/WebKitWindowProperties.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/annotation-glossary.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/api-index-2-2.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/api-index-2-4.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/ch01.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/ch02.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/home.png
/usr/share/doc/libwebkit2gtk-3.0-dev/html/index-all.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/index.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/left-insensitive.png
/usr/share/doc/libwebkit2gtk-3.0-dev/html/left.png
/usr/share/doc/libwebkit2gtk-3.0-dev/html/right-insensitive.png
/usr/share/doc/libwebkit2gtk-3.0-dev/html/right.png
/usr/share/doc/libwebkit2gtk-3.0-dev/html/style.css
/usr/share/doc/libwebkit2gtk-3.0-dev/html/up-insensitive.png
/usr/share/doc/libwebkit2gtk-3.0-dev/html/up.png
/usr/share/doc/libwebkit2gtk-3.0-dev/html/webkit2gtk-WebKitError.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/webkit2gtk-WebKitVersion.html
/usr/share/doc/libwebkit2gtk-3.0-dev/html/webkit2gtk.devhelp2.gz