Revert "Switch to hard-coding metric ids for v1.0 config"

This reverts commit abecf940e86d8c16e3a9ce1939334413374fa101.

Reason for revert: This change breaks the cobalt testapp tests.

TBR=rudominer@google.com

Change-Id: I67ac218477fb0740a78dc7bb7e02e71b083490e0
2 files changed