Linux: fix about:memory for epiphany and add iceweasel.
Linux: fix about:memory for epiphany and add iceweasel.

BUG=40370
TEST=Run epiphany and iceweasel and check that they appear in about:memory.

Review URL: http://codereview.chromium.org/1611007

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@43633 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser