Add fallbacks for important console.* methods.

Review Request #3703 — Created Dec. 27, 2012 and submitted — Latest diff uploaded

Information

Review Board
release-1.7.x

Reviewers

Add fallbacks for important console.* methods.

We can't always rely upon console.log and console.assert existing in the
browser. What's worse is that we can't rely on console.assert behaving
the same way. In Chrome, for instance, a failed assert will log but will
continue on in the function, causing further problems.

We now have an empty fallback for console.log, and a console.assert
wrapper that ensures we throw an exception on a failed assert.

This helps with consistency, and with our unit tests.
Tested in Chrome and Firefox, with existing unit tests depending on
this behavior.
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