Merge 164913 "Revert "Explicit space required around NOT/ONLY/AN..."

Source/core/css/CSSGrammar.y

Index: Source/core/css/CSSGrammar.y
===================================================================
--- Source/core/css/CSSGrammar.y	(revision 165887)
+++ Source/core/css/CSSGrammar.y	(working copy)
@@ -676,7 +676,7 @@
         $$ = parser->createFloatingMediaQueryExpList();
         $$->append(parser->sinkFloatingMediaQueryExp($1));
     }
-    | media_query_exp_list space MEDIA_AND space media_query_exp {
+    | media_query_exp_list maybe_space MEDIA_AND maybe_space media_query_exp {
         $$ = $1;
         $$->append(parser->sinkFloatingMediaQueryExp($5));
     }
@@ -686,7 +686,7 @@
     maybe_space {
         $$ = parser->createFloatingMediaQueryExpList();
     }
-    | space MEDIA_AND space media_query_exp_list maybe_space {
+    | maybe_space MEDIA_AND maybe_space media_query_exp_list maybe_space {
         $$ = $4;
     }
     ;
@@ -695,10 +695,10 @@
     /*empty*/ {
         $$ = MediaQuery::None;
     }
-    | MEDIA_ONLY space {
+    | MEDIA_ONLY maybe_space {
         $$ = MediaQuery::Only;
     }
-    | MEDIA_NOT space {
+    | MEDIA_NOT maybe_space {
         $$ = MediaQuery::Not;
     }
     ;