Remove redundant test: COMPILER(GCC) || COMPILER(CLANG) => COMPILER(GCC)
Remove redundant test: COMPILER(GCC) || COMPILER(CLANG) => COMPILER(GCC)

COMPILER(CLANG) =implies=> COMPILER(GCC)
so
COMPILER(GCC) || COMPILER(CLANG) == COMPILER(GCC)

Remove redundant and misleading test.

Came up in:
[POSSIBLE PERFORMANCE IMPACT] Use __builtin_expect on Clang as well (for UNLIKELY and LIKELY)
https://codereview.chromium.org/114933002/
NOTRY=true

Review URL: https://codereview.chromium.org/105673006

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@163876 bbb929c8-8fbe-4397-9dbb-9b2b20218538

crosswalk-project/blink-crosswalk-efl,XiaosongWei/blink-crosswalk,Pluto-tv/blink-crosswalk,Bysmyyr/blink-crosswalk,nwjs/blink,nwjs/blink,PeterWangIntel/blink-crosswalk,smishenk/blink-crosswalk,smishenk/blink-crosswalk,kurli/blink-crosswalk,crosswalk-project/blink-crosswalk-efl,jtg-gg/blink,ondra-novak/blink,Bysmyyr/blink-crosswalk,Pluto-tv/blink-crosswalk,PeterWangIntel/blink-crosswalk,hgl888/blink-crosswalk-efl,kurli/blink-crosswalk,smishenk/blink-crosswalk,jtg-gg/blink,smishenk/blink-crosswalk,Bysmyyr/blink-crosswalk,hgl888/blink-crosswalk-efl,Bysmyyr/blink-crosswalk,nwjs/blink,modulexcite/blink,hgl888/blink-crosswalk-efl,kurli/blink-crosswalk,ondra-novak/blink,PeterWangIntel/blink-crosswalk,hgl888/blink-crosswalk-efl,jtg-gg/blink,ondra-novak/blink,hgl888/blink-crosswalk-efl,Bysmyyr/blink-crosswalk,Pluto-tv/blink-crosswalk,XiaosongWei/blink-crosswalk,PeterWangIntel/blink-crosswalk,jtg-gg/blink,kurli/blink-crosswalk,PeterWangIntel/blink-crosswalk,ondra-novak/blink,kurli/blink-crosswalk,nwjs/blink,hgl888/blink-crosswalk-efl,XiaosongWei/blink-crosswalk,nwjs/blink,kurli/blink-crosswalk,modulexcite/blink,PeterWangIntel/blink-crosswalk,hgl888/blink-crosswalk-efl,nwjs/blink,kurli/blink-crosswalk,Pluto-tv/blink-crosswalk,jtg-gg/blink,smishenk/blink-crosswalk,modulexcite/blink,Bysmyyr/blink-crosswalk,modulexcite/blink,smishenk/blink-crosswalk,Bysmyyr/blink-crosswalk,crosswalk-project/blink-crosswalk-efl,Pluto-tv/blink-crosswalk,crosswalk-project/blink-crosswalk-efl,crosswalk-project/blink-crosswalk-efl,nwjs/blink,hgl888/blink-crosswalk-efl,XiaosongWei/blink-crosswalk,XiaosongWei/blink-crosswalk,hgl888/blink-crosswalk-efl,smishenk/blink-crosswalk,Bysmyyr/blink-crosswalk,hgl888/blink-crosswalk-efl,ondra-novak/blink,jtg-gg/blink,modulexcite/blink,smishenk/blink-crosswalk,modulexcite/blink,ondra-novak/blink,XiaosongWei/blink-crosswalk,Pluto-tv/blink-crosswalk,kurli/blink-crosswalk,XiaosongWei/blink-crosswalk,modulexcite/blink,Pluto-tv/blink-crosswalk,kurli/blink-crosswalk,crosswalk-project/blink-crosswalk-efl,nwjs/blink,smishenk/blink-crosswalk,modulexcite/blink,nwjs/blink,Pluto-tv/blink-crosswalk,jtg-gg/blink,crosswalk-project/blink-crosswalk-efl,Pluto-tv/blink-crosswalk,crosswalk-project/blink-crosswalk-efl,PeterWangIntel/blink-crosswalk,crosswalk-project/blink-crosswalk-efl,PeterWangIntel/blink-crosswalk,Bysmyyr/blink-crosswalk,ondra-novak/blink,PeterWangIntel/blink-crosswalk,Bysmyyr/blink-crosswalk,modulexcite/blink,kurli/blink-crosswalk,nwjs/blink,smishenk/blink-crosswalk,PeterWangIntel/blink-crosswalk,XiaosongWei/blink-crosswalk,jtg-gg/blink,XiaosongWei/blink-crosswalk,ondra-novak/blink,XiaosongWei/blink-crosswalk,Pluto-tv/blink-crosswalk,jtg-gg/blink,jtg-gg/blink,ondra-novak/blink,modulexcite/blink