Fixed ASAN-failing unit tests in color_analysis_unittest.cc

BUG=299284,234336

Review URL: https://codereview.chromium.org/25391002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226834 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226834