Let IdleSpellCheckCallback take full control over SpellCheckRequester

third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.h

Index: third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.h
diff --git a/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.h b/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.h
index 2f1d8eb2a0db7e7c77554115639b12df0dfcead9..3d6ba6f5bdde5869ec691ca8e2ee376efd55eff1 100644
--- a/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.h
+++ b/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.h
@@ -84,7 +84,7 @@ class CORE_EXPORT SpellChecker final : public GarbageCollected<SpellChecker> {
       bool onlyHandleWordsContainingSelection);
   void cancelCheck();
 
-  // Exposed for testing only
+  // Exposed for testing and idle time spell checker
   SpellCheckRequester& spellCheckRequester() const {
     return *m_spellCheckRequester;
   }
@@ -124,6 +124,9 @@ class CORE_EXPORT SpellChecker final : public GarbageCollected<SpellChecker> {
                               const VisibleSelection& newAdjacentWords);
 
   Member<LocalFrame> m_frame;
+
+  // TODO(xiaochengh): Move it to IdleSpellCheckCallback after idle time spell
+  // checking reaches status=stable.
   const Member<SpellCheckRequester> m_spellCheckRequester;
 };