Cleanup: Remove the last traces of Instant Search on Android

chrome/browser/ui/android/toolbar/toolbar_model_android.cc

Index: chrome/browser/ui/android/toolbar/toolbar_model_android.cc
diff --git a/chrome/browser/ui/android/toolbar/toolbar_model_android.cc b/chrome/browser/ui/android/toolbar/toolbar_model_android.cc
index 8676af223e086d18753f7f288889799063aac5b4..9368db598f0ebd54f29fd34971751987ebf33550 100644
--- a/chrome/browser/ui/android/toolbar/toolbar_model_android.cc
+++ b/chrome/browser/ui/android/toolbar/toolbar_model_android.cc
@@ -5,17 +5,12 @@
 #include "chrome/browser/ui/android/toolbar/toolbar_model_android.h"
 
 #include "base/android/jni_string.h"
-#include "base/metrics/field_trial.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/search/search.h"
-#include "chrome/browser/search_engines/ui_thread_search_terms_data.h"
 #include "components/toolbar/toolbar_model_impl.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/ssl_status.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_constants.h"
 #include "jni/ToolbarModel_jni.h"
-#include "net/cert/x509_certificate.h"
 
 using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;