Update mojo sdk to rev f6c8ec07c01deebc13178d516225fd12695c3dc2

mojo/public/cpp/utility/run_loop.h

Index: mojo/public/cpp/utility/run_loop.h
diff --git a/mojo/public/cpp/utility/run_loop.h b/mojo/public/cpp/utility/run_loop.h
index cb324aa913c51241b80dc1e38d5790065a5aa964..feb5b923029e79e76fb46b85a9ac262f05217e2c 100644
--- a/mojo/public/cpp/utility/run_loop.h
+++ b/mojo/public/cpp/utility/run_loop.h
@@ -27,7 +27,7 @@ class RunLoop {
   // Cleans state created by Setup().
   static void TearDown();
 
-  // Returns the RunLoop for the current thread. Returns NULL if not yet
+  // Returns the RunLoop for the current thread. Returns null if not yet
   // created.
   static RunLoop* current();
 
@@ -62,7 +62,7 @@ class RunLoop {
   // Contains the data needed to track a request to AddHandler().
   struct HandlerData {
     HandlerData()
-        : handler(NULL),
+        : handler(nullptr),
           handle_signals(MOJO_HANDLE_SIGNAL_NONE),
           deadline(0),
           id(0) {}
@@ -112,7 +112,7 @@ class RunLoop {
 
   HandleToHandlerData handler_data_;
 
-  // If non-NULL we're running (inside Run()). Member references a value on the
+  // If non-null we're running (inside Run()). Member references a value on the
   // stack.
   RunState* run_state_;