Control the order of gclient spec keys in fetch
Control the order of gclient spec keys in fetch

Follow the explicit iteration order of the spec keys array instead of relying
on the arbitrary iteration order of the hashtable.

BUG=

Review URL: https://chromiumcodereview.appspot.com/13878009

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@194973 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

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