Move ownership of IdleSpellCheckCallback from LocalFrame to SpellChecker

third_party/WebKit/Source/core/editing/spellcheck/IdleSpellCheckCallback.cpp

Index: third_party/WebKit/Source/core/editing/spellcheck/IdleSpellCheckCallback.cpp
diff --git a/third_party/WebKit/Source/core/editing/spellcheck/IdleSpellCheckCallback.cpp b/third_party/WebKit/Source/core/editing/spellcheck/IdleSpellCheckCallback.cpp
index 7230ffffd5ee867855661bf9b1c5572e84496107..cfdac39e20df07ff345af77fa7bca31e3b0871a5 100644
--- a/third_party/WebKit/Source/core/editing/spellcheck/IdleSpellCheckCallback.cpp
+++ b/third_party/WebKit/Source/core/editing/spellcheck/IdleSpellCheckCallback.cpp
@@ -53,21 +53,13 @@ IdleSpellCheckCallback::IdleSpellCheckCallback(LocalFrame& frame)
                       &IdleSpellCheckCallback::coldModeTimerFired) {}
 
 SpellCheckRequester& IdleSpellCheckCallback::spellCheckRequester() const {
-  // TODO(xiaochengh): decouple with SpellChecker after SpellCheckRequester is
-  // moved to IdleSpellCheckCallback.
   return frame().spellChecker().spellCheckRequester();
 }
 
 bool IdleSpellCheckCallback::isSpellCheckingEnabled() const {
-  // TODO(xiaochengh): decouple with SpellChecker.
   return frame().spellChecker().isSpellCheckingEnabled();
 }
 
-void IdleSpellCheckCallback::prepareForLeakDetection() {
-  if (RuntimeEnabledFeatures::idleTimeSpellCheckingEnabled())
-    spellCheckRequester().prepareForLeakDetection();
-}
-
 void IdleSpellCheckCallback::requestInvocation() {
   IdleRequestOptions options;
   options.setTimeout(kRequestTimeoutMS);