Add ctxsl_alternate_term to the contextual search request and update the API version to 2.

chrome/browser/search_engines/template_url_service_android.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_ANDROID_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_ANDROID_H_
 
 #include "base/android/jni_weak_ref.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 27 matching lines @@
       jstring jquery);
   base::android::ScopedJavaLocalRef<jstring> GetUrlForVoiceSearchQuery(
       JNIEnv* env,
       jobject obj,
       jstring jquery);
   base::android::ScopedJavaLocalRef<jstring> ReplaceSearchTermsInUrl(
       JNIEnv* env,
       jobject obj,
       jstring jquery,
       jstring jcurrent_url);
+  // TODO(jeremycho): Delete once Clank no longer references it.
   base::android::ScopedJavaLocalRef<jstring> GetUrlForContextualSearchQuery(
       JNIEnv* env,
       jobject obj,
       jstring jquery);
+  base::android::ScopedJavaLocalRef<jstring> GetUrlForContextualSearchQuery(
+      JNIEnv* env,
+      jobject obj,
+      jstring jquery,
+      jstring jalternate_term);
 
   static bool Register(JNIEnv* env);
 
  private:
   ~TemplateUrlServiceAndroid();
 
   bool IsPrepopulatedTemplate(TemplateURL* url);
 
   void OnTemplateURLServiceLoaded();
 
   JavaObjectWeakGlobalRef weak_java_obj_;
 
   // Pointer to the TemplateUrlService for the main profile.
   TemplateURLService* template_url_service_;
 
   scoped_ptr<TemplateURLService::Subscription> template_url_subscription_;
 
   DISALLOW_COPY_AND_ASSIGN(TemplateUrlServiceAndroid);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_ANDROID_H_