Rebaseline grayscale-gradient-mask-2.svg (Skia suppression).

BUG=250525
TBR=robertphillips

Review URL: https://codereview.chromium.org/17882002

git-svn-id: svn://svn.chromium.org/blink/trunk@153064 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix the crash issue for debug version when restoring texture binding at Unit 0 in DrawingBuffer::prepareMailbox()

BUG=254345

Review URL: https://chromiumcodereview.appspot.com/17835002

git-svn-id: svn://svn.chromium.org/blink/trunk@153065 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: fix last element selection in Ctrl-O dialog

FilteredItemSelectionDialog.itemElement method should
return element with selection class if it is selected.

BUG=253531

Review URL: https://chromiumcodereview.appspot.com/17580021

git-svn-id: svn://svn.chromium.org/blink/trunk@153067 bbb929c8-8fbe-4397-9dbb-9b2b20218538