Revert 111548 - Broke OmniboxViewTest.AcceptKeywordBySpace on Linux

Strip invalid characters (line breaks, tabs), javascript:schemes from the copied text while pasting text, droping text and creating right click popup for omnibox.

BUG=82181, 103703.
TEST=Copy a string with line breaks "\n" or tabs "\t".
Then right click on omnibox.
Chromium should not trigger DCHECKS.

Review URL: http://codereview.chromium.org/8513002

TBR=ncj674@motorola.com
Review URL: http://codereview.chromium.org/8690006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@111558 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed