Move the class definition out of an unnamed namespace because it is in a header files included in multiple source files. clang treats the header file's class declaration in an unnamed namespace as distinct in each compilation unit and emits -Wunused-member-function warnings because the member function release() is used in some compilation units but not others.
intl/unicharutil/util/ICUUtils.h:25:17 [-Wunused-member-function] unused member function 'empty'
intl/unicharutil/util/ICUUtils.h:26:17 [-Wunused-member-function] unused member function 'release'
MozReview-Commit-ID: 7AgzzzRgni4
--HG--
extra : source : aeed73b6225ba4834a25de0ec9e23592de25c871
extra : intermediate-source : d0788a9eba9621e04f6be30771acac5707d4a7e1
dfd1e13cc5