Remove ContainerNode overload for ElementTraversal::previous()

Remove ContainerNode overload for NodeTraversal::previous() as it adds no
benefit compared to the one taking a Node in argument.

The ElementTraversal::previous() implementation calls NodeTraversal::previous()
which does not have a ContainerNode overload. The NodeTraversal::previous()
implementation calls previousSibling() and parentNode() on the argument so
having a ContainerNode overload for it wouldn't help as those operations are
fast on pure Nodes.

R=esprehn@chromium.org, adamk@chromium.org

Review URL: https://codereview.chromium.org/425033002

git-svn-id: svn://svn.chromium.org/blink/trunk@179163 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Styling for blackbox regex UI dialog.

Make disabled regex text lines line-through styled.

BUG=267592
R=vsevik

Review URL: https://codereview.chromium.org/423153002

git-svn-id: svn://svn.chromium.org/blink/trunk@179164 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Drop slower Node::hasTagName(QualifiedName) overload

Drop slower Node::hasTagName(QualifiedName) overload. It is only used by
SiblingTraversalStrategies at this point. The objective is to encourage
future callers to use the faster alternatives:
- HTMLElement::hasTagName(HTMLQualifiedName) / SVGElement::hasTagName(SVGQualifiedName)
- Node::hasTagName(HTMLQualifiedName) / Node::hasTagName(SVGQualifiedName)
- Element::hasTagName(QualifiedName)

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/415823002

git-svn-id: svn://svn.chromium.org/blink/trunk@179165 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix watchlists for clipboard.

BUG=none
R=rbyers@chromium.org

Review URL: https://codereview.chromium.org/424153002

git-svn-id: svn://svn.chromium.org/blink/trunk@179167 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Do not re-create CSSWorkspaceBinding TargetInfo on MainFrameNavigated

R=vsevik

Review URL: https://codereview.chromium.org/429593006

git-svn-id: svn://svn.chromium.org/blink/trunk@179168 bbb929c8-8fbe-4397-9dbb-9b2b20218538