[spell] Remove spelling service feedback from behind the flag

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index a7adf4f2d808f17b93a9d872bc9822f0abceebd9..db40fb17c8690f0970ddb60ae602453507ac7af4 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -742,9 +742,10 @@ const char kEnableSpdy4a2[]                 = "enable-spdy4a2";
 // Enables auto correction for misspelled words.
 const char kEnableSpellingAutoCorrect[]     = "enable-spelling-auto-correct";
 
-// Enables sending user feedback to spelling service.
-const char kEnableSpellingServiceFeedback[] =
-    "enable-spelling-service-feedback";
+// Enables participation in the field trial for user feedback to spelling
+// service.
+const char kEnableSpellingFeedbackFieldTrial[] =
+    "enable-spelling-feedback-field-trial";
 
 // Enables the stacked tabstrip.
 const char kEnableStackedTabStrip[]         = "enable-stacked-tab-strip";