Fix compiling of sync on linux.

chrome/browser/sync/util/compat_pthread.h

Index: chrome/browser/sync/util/compat_pthread.h
===================================================================
--- chrome/browser/sync/util/compat_pthread.h	(revision 26817)
+++ chrome/browser/sync/util/compat_pthread.h	(working copy)
@@ -19,21 +19,4 @@
 }
 #endif  // OS_WIN
 
-#if (!defined(OS_WIN) && !defined(OS_MACOSX))
-// TODO(timsteele): What the heck is this?
-inline int sem_post_multiple(sem_t* sem, int number) {
-  int i;
-  int r = 0;
-  for (i = 0; i < number; i++) {
-    r = sem_post(sem);
-    if (r != 0) {
-      LOG_IF(ERROR, i > 0) << "sem_post() failed on iteration #" << i <<
-        " of " << number;
-      return r;
-    }
-  }
-  return 0;
-}
-#endif  // (!defined(OS_WIN) && !defined(OS_MACOSX))
-
 #endif  // CHROME_BROWSER_SYNC_UTIL_COMPAT_PTHREAD_H_