Fix for pasting content into a text area when middle clicking on a link in Linux which has an event handler that focuses a textarea.

When adding the unified version of middle mouse button pres in rev 129750 a bug was introduced that also pasted the text from the clipboard in a focused input field when clicking on a link with the middle mouse button, if the link focused an input field in its click event handler.

Contributed by mkaeser@google.com.

BUG=197007
R=tony@chromium.org

Review URL: https://codereview.chromium.org/18600008

git-svn-id: svn://svn.chromium.org/blink/trunk@153521 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Mark some inspector tests as failing

BUG=257132
TBR=alph@chromium.org

Review URL: https://codereview.chromium.org/18298005

git-svn-id: svn://svn.chromium.org/blink/trunk@153522 bbb929c8-8fbe-4397-9dbb-9b2b20218538