Fix for pixel-moving CSS filters with clipping.

When using a "pixel-moving" filter (ie., drop-shadow or blur), we
disable the normal clip operation, since we want to want to render
the full results of the element pre-clip for filtering. Clipping is
then applied just before drawing the filtered result.

However, we shouldn't disable *all* clipping recursively, since we
want children which clip themselves to still continue to be clipped.
The fix is to pass the original (unmodified) paintingInfo to
paintChildren().

BUG=350411

Review URL: https://codereview.chromium.org/476953003

git-svn-id: svn://svn.chromium.org/blink/trunk@180361 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [Documentation] Add property token autodetection

Now documentation context menu item appears without token selection.

BUG=391593

Review URL: https://codereview.chromium.org/471583003

git-svn-id: svn://svn.chromium.org/blink/trunk@180362 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Introduce HasHTMLTagName functor and use it with ElementTraversal

Introduce HasHTMLTagName functor and use it with ElementTraversal to simplify
the code a bit.

R=adamk@chromium.org

Review URL: https://codereview.chromium.org/471173003

git-svn-id: svn://svn.chromium.org/blink/trunk@180363 bbb929c8-8fbe-4397-9dbb-9b2b20218538