Make aura build on Win64 

Just a bunch of c4267 build suppressions. 

BUG=166496
BUG=167187
TBR=cpu@chromium.org, sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12262066

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182752 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed