Revert of https://codereview.chromium.org/23483051/
Reason for revert: WebViewTest.SetBaseBackgroundColorAndBlendWithExistingContent is failing consistently on WebKit Android (Nexus4) and Android Tests (dbg) as WebCore::redChannel(color) evaluates to false

TBR=aelias@chromium.org,enne@chromium.org,jamesr@chromium.org,boliu@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/110913005

git-svn-id: svn://svn.chromium.org/blink/trunk@163699 bbb929c8-8fbe-4397-9dbb-9b2b20218538