process_log_utils.py clean-up: use OrderedDict when constructing JSON.
process_log_utils.py clean-up: use OrderedDict when constructing JSON.

BUG=

Review URL: https://codereview.chromium.org/281303002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@270787 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build