Update mojo sdk to rev f6c8ec07c01deebc13178d516225fd12695c3dc2

mojo/edk/system/waiter.cc

Index: mojo/edk/system/waiter.cc
diff --git a/mojo/edk/system/waiter.cc b/mojo/edk/system/waiter.cc
index 6dcd713039e95c38681581e8694e9c8156a40101..f9047cb41f7646ce9311f3b622ab4f1eed2785d7 100644
--- a/mojo/edk/system/waiter.cc
+++ b/mojo/edk/system/waiter.cc
@@ -49,7 +49,7 @@ MojoResult Waiter::Wait(MojoDeadline deadline, uint32_t* context) {
   if (awoken_) {
     DCHECK_NE(awake_result_, MOJO_RESULT_INTERNAL);
     if (context)
-      *context = awake_context_;
+      *context = static_cast<uint32_t>(awake_context_);
     return awake_result_;
   }
 
@@ -78,11 +78,11 @@ MojoResult Waiter::Wait(MojoDeadline deadline, uint32_t* context) {
 
   DCHECK_NE(awake_result_, MOJO_RESULT_INTERNAL);
   if (context)
-    *context = awake_context_;
+    *context = static_cast<uint32_t>(awake_context_);
   return awake_result_;
 }
 
-void Waiter::Awake(MojoResult result, uint32_t context) {
+void Waiter::Awake(MojoResult result, uintptr_t context) {
   base::AutoLock locker(lock_);
 
   if (awoken_)