Remove SearchButton.

chrome/browser/search/search.cc

Index: chrome/browser/search/search.cc
diff --git a/chrome/browser/search/search.cc b/chrome/browser/search/search.cc
index 28c7a7b33de00f7b37c224af340429d98b75991d..21254bc815755e6b70ffd08d310837f4f235212a 100644
--- a/chrome/browser/search/search.cc
+++ b/chrome/browser/search/search.cc
@@ -65,7 +65,6 @@ const char kUseSearchPathForInstant[] = "use_search_path_for_instant";
 const char kAltInstantURLPath[] = "search";
 const char kAltInstantURLQueryParams[] = "&qbp=1";
 
-const char kDisplaySearchButtonFlagName[] = "display_search_button";
 #if !defined(OS_IOS) && !defined(OS_ANDROID)
 const char kEnableQueryExtractionFlagName[] = "query_extraction";
 #endif
@@ -581,27 +580,6 @@ GURL GetLocalInstantURL(Profile* profile) {
   return GURL(chrome::kChromeSearchLocalNtpUrl);
 }
 
-DisplaySearchButtonConditions GetDisplaySearchButtonConditions() {
-  const base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
-  if (cl->HasSwitch(switches::kDisableSearchButtonInOmnibox))
-    return DISPLAY_SEARCH_BUTTON_NEVER;
-  if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxForStr))
-    return DISPLAY_SEARCH_BUTTON_FOR_STR;
-  if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxForStrOrIip))
-    return DISPLAY_SEARCH_BUTTON_FOR_STR_OR_IIP;
-  if (cl->HasSwitch(switches::kEnableSearchButtonInOmniboxAlways))
-    return DISPLAY_SEARCH_BUTTON_ALWAYS;
-
-  FieldTrialFlags flags;
-  if (!GetFieldTrialInfo(&flags))
-    return DISPLAY_SEARCH_BUTTON_NEVER;
-  uint64 value =
-      GetUInt64ValueForFlagWithDefault(kDisplaySearchButtonFlagName, 0, flags);
-  return (value < DISPLAY_SEARCH_BUTTON_NUM_VALUES) ?
-      static_cast<DisplaySearchButtonConditions>(value) :
-      DISPLAY_SEARCH_BUTTON_NEVER;
-}
-
 bool ShouldShowGoogleLocalNTP() {
   FieldTrialFlags flags;
   return !GetFieldTrialInfo(&flags) || GetBoolValueForFlagWithDefault(