Convert Pass()→std::move() in //chrome

chrome/renderer/spellchecker/spellcheck_worditerator.cc

Index: chrome/renderer/spellchecker/spellcheck_worditerator.cc
diff --git a/chrome/renderer/spellchecker/spellcheck_worditerator.cc b/chrome/renderer/spellchecker/spellcheck_worditerator.cc
index abe1d86b212a258eeef9a534167b85b7a1e2c91e..0183ebbf5202537147f7e9a3decec3dd798cb073 100644
--- a/chrome/renderer/spellchecker/spellcheck_worditerator.cc
+++ b/chrome/renderer/spellchecker/spellcheck_worditerator.cc
@@ -8,6 +8,7 @@
 
 #include <map>
 #include <string>
+#include <utility>
 
 #include "base/i18n/break_iterator.h"
 #include "base/logging.h"
@@ -334,7 +335,7 @@ bool SpellcheckWordIterator::Initialize(
     NOTREACHED() << "failed to open iterator (broken rules)";
     return false;
   }
-  iterator_ = iterator.Pass();
+  iterator_ = std::move(iterator);
 
   // Set the character attributes so we can normalize the words extracted by
   // this iterator.