Cosmetic changes ("set up" is a verb, "setup" is a noun).

src/log.cc

Index: src/log.cc
===================================================================
--- src/log.cc	(revision 10367)
+++ src/log.cc	(working copy)
@@ -1615,7 +1615,7 @@
 }
 
 
-bool Logger::Setup() {
+bool Logger::SetUp() {
   // Tests and EnsureInitialize() can call this twice in a row. It's harmless.
   if (is_initialized_) return true;
   is_initialized_ = true;
@@ -1708,9 +1708,9 @@
 
 
 void Logger::EnableSlidingStateWindow() {
-  // If the ticker is NULL, Logger::Setup has not been called yet.  In
+  // If the ticker is NULL, Logger::SetUp has not been called yet.  In
   // that case, we set the sliding_state_window flag so that the
-  // sliding window computation will be started when Logger::Setup is
+  // sliding window computation will be started when Logger::SetUp is
   // called.
   if (ticker_ == NULL) {
     FLAG_sliding_state_window = true;