Add WebDataConsumerHandle::debugName()
Add WebDataConsumerHandle::debugName()

BUG=480746

Review URL: https://codereview.chromium.org/1183373003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@197324 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk