Clean up IconNTP-related code

chrome/renderer/searchbox/searchbox_extension.cc

Index: chrome/renderer/searchbox/searchbox_extension.cc
diff --git a/chrome/renderer/searchbox/searchbox_extension.cc b/chrome/renderer/searchbox/searchbox_extension.cc
index 72d0b6b1347c74e71947d1921c5b00384585cd12..aee955c7bac4f58f079985dc021df2ffd395438c 100644
--- a/chrome/renderer/searchbox/searchbox_extension.cc
+++ b/chrome/renderer/searchbox/searchbox_extension.cc
@@ -70,21 +70,6 @@ base::string16 V8ValueToUTF16(v8::Local<v8::Value> v) {
   return base::string16(reinterpret_cast<const base::char16*>(*s), s.length());
 }
 
-// Returns whether icon NTP is enabled by experiment.
-// TODO(huangs): Remove all 3 copies of this routine once Icon NTP launches.
-bool IsIconNTPEnabled() {
-  // Note: It's important to query the field trial state first, to ensure that
-  // UMA reports the correct group.
-  const std::string group_name = base::FieldTrialList::FindFullName("IconNTP");
-  using base::CommandLine;
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisableIconNtp))
-    return false;
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableIconNtp))
-    return true;
-
-  return base::StartsWith(group_name, "Enabled", base::CompareCase::SENSITIVE);
-}
-
 // Converts string16 to V8 String.
 v8::Local<v8::String> UTF16ToV8String(v8::Isolate* isolate,
                                        const base::string16& s) {
@@ -189,18 +174,6 @@ v8::Local<v8::Object> GenerateMostVisitedItem(
 
   obj->Set(v8::String::NewFromUtf8(isolate, "tileSource"),
            v8::Integer::New(isolate, static_cast<int>(mv_item.source)));
-
-  if (IsIconNTPEnabled()) {
-    // Update website http://www.chromium.org/embeddedsearch when we make this
-    // permanent.
-    // Large icon size is 48px * window.devicePixelRatio. This is easier to set
-    // from JS, where IsIconNTPEnabled() is not available. So we add stubs
-    // here, and let JS fill in details.
-    obj->Set(v8::String::NewFromUtf8(isolate, "largeIconUrl"),
-             v8::String::NewFromUtf8(isolate, "chrome-search://large-icon/"));
-    obj->Set(v8::String::NewFromUtf8(isolate, "fallbackIconUrl"),
-        v8::String::NewFromUtf8(isolate, "chrome-search://fallback-icon/"));
-  }
   obj->Set(v8::String::NewFromUtf8(isolate, "title"),
            UTF16ToV8String(isolate, title));
   obj->Set(v8::String::NewFromUtf8(isolate, "domain"),