Exclude spellcheck related code properly on android/ios which doesn't have spellchecker

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 c3ab8ce888a390eef33f0dbd1d9faa1ed553f59d..2f6dcace4dd3de92d5d541364e27cb7cef19c1e9 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -590,14 +590,6 @@ const char kDisableSettingsWindow[]          = "disable-settings-window";
 // Enable SPDY/4, aka HTTP/2. This is a temporary testing flag.
 const char kEnableSpdy4[]                   = "enable-spdy4";
 
-// Enables auto correction for misspelled words.
-const char kEnableSpellingAutoCorrect[]     = "enable-spelling-auto-correct";
-
-// Enables participation in the field trial for user feedback to spelling
-// service.
-const char kEnableSpellingFeedbackFieldTrial[] =
-    "enable-spelling-feedback-field-trial";
-
 // Enables a feature that holds back some SSLConnectJobs in order to
 // minimize the number of full SSL handshakes completed.
 const char kEnableSSLConnectJobWaiting[] = "enable-ssl-connect-job-waiting";
@@ -1111,6 +1103,15 @@ const char kSpeculativeResourcePrefetchingLearning[] = "learning";
 // Speculative resource prefetching is enabled.
 const char kSpeculativeResourcePrefetchingEnabled[] = "enabled";
 
+#if defined(ENABLE_SPELLCHECK)
+// Enables auto correction for misspelled words.
+const char kEnableSpellingAutoCorrect[]     = "enable-spelling-auto-correct";
+
+// Enables participation in the field trial for user feedback to spelling
+// service.
+const char kEnableSpellingFeedbackFieldTrial[] =
+    "enable-spelling-feedback-field-trial";
+
 // Specifies the URL where spelling service feedback data will be sent instead
 // of the default URL. This switch is for temporary testing only.
 // TODO(rouslan): Remove this flag when feedback testing is complete. Revisit by
@@ -1124,6 +1125,7 @@ const char kSpellingServiceFeedbackUrl[] = "spelling-service-feedback-url";
 // August 2013.
 const char kSpellingServiceFeedbackIntervalSeconds[] =
     "spelling-service-feedback-interval-seconds";
+#endif
 
 // Specifies the maximum SSL/TLS version ("ssl3", "tls1", "tls1.1", or
 // "tls1.2").