Remove implicit HANDLE conversions from win8.

win8/delegate_execute/delegate_execute.cc

Index: win8/delegate_execute/delegate_execute.cc
diff --git a/win8/delegate_execute/delegate_execute.cc b/win8/delegate_execute/delegate_execute.cc
index 986911cf8948fa844dbd418ac342266db33dd7eb..575ed9e83582245b712ab2c2e26ebe977f2cc500 100644
--- a/win8/delegate_execute/delegate_execute.cc
+++ b/win8/delegate_execute/delegate_execute.cc
@@ -97,7 +97,7 @@ int RelaunchChrome(const DelegateExecuteOperation& operation) {
   ScopedHandle mutex(OpenMutexW(SYNCHRONIZE, FALSE, operation.mutex().c_str()));
   if (mutex.IsValid()) {
     const int kWaitSeconds = 5;
-    DWORD result = ::WaitForSingleObject(mutex, kWaitSeconds * 1000);
+    DWORD result = ::WaitForSingleObject(mutex.Get(), kWaitSeconds * 1000);
     if (result == WAIT_ABANDONED) {
       // This is the normal case. Chrome exits and windows marks the mutex as
       // abandoned.