Add support to enable EmbeddedSearch API in Android Chrome search results page.

chrome/browser/android/tab_android.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/android/tab_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/debug/trace_event.h"
 #include "chrome/browser/android/chrome_web_contents_delegate_android.h"
 #include "chrome/browser/browser_about_handler.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/google/google_url_tracker.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/printing/print_view_manager_basic.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_android.h"
+#include "chrome/browser/search/search.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/sync/glue/synced_tab_delegate_android.h"
 #include "chrome/browser/ui/android/content_settings/popup_blocked_infobar_delegate.h"
 #include "chrome/browser/ui/android/context_menu_helper.h"
 #include "chrome/browser/ui/android/infobars/infobar_container_android.h"
 #include "chrome/browser/ui/android/tab_model/tab_model.h"
 #include "chrome/browser/ui/android/tab_model/tab_model_list.h"
 #include "chrome/browser/ui/android/window_android_helper.h"
 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
+#include "chrome/browser/ui/search/search_tab_helper.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tab_helpers.h"
 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 #include "chrome/common/net/url_fixer_upper.h"
 #include "chrome/common/url_constants.h"
 #include "components/infobars/core/infobar_container.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/user_metrics.h"
@@ skipping 411 matching lines @@
       load_params.browser_initiated_post_data =
           base::RefCountedBytes::TakeVector(&post_data);
     }
     load_params.transition_type =
         content::PageTransitionFromInt(page_transition);
     if (j_referrer_url) {
       load_params.referrer = content::Referrer(
           GURL(base::android::ConvertJavaStringToUTF8(env, j_referrer_url)),
           static_cast<blink::WebReferrerPolicy>(referrer_policy));
     }
+    const base::string16 search_terms =
+        chrome::ExtractSearchTermsFromURL(GetProfile(), gurl);
+    SearchTabHelper* search_tab_helper =
+        SearchTabHelper::FromWebContents(web_contents_.get());
+    if (!search_terms.empty() && search_tab_helper &&
+        search_tab_helper->SupportsInstant()) {
+      search_tab_helper->Submit(search_terms);
+      return DEFAULT_PAGE_LOAD;
+    }
     content_view->LoadUrl(load_params);
   }
   return DEFAULT_PAGE_LOAD;
 }
 
 ToolbarModel::SecurityLevel TabAndroid::GetSecurityLevel(JNIEnv* env,
                                                          jobject obj) {
   return ToolbarModelImpl::GetSecurityLevelForWebContents(web_contents());
 }
 
@@ skipping 40 matching lines @@
 
 static void Init(JNIEnv* env, jobject obj) {
   TRACE_EVENT0("native", "TabAndroid::Init");
   // This will automatically bind to the Java object and pass ownership there.
   new TabAndroid(env, obj);
 }
 
 bool TabAndroid::RegisterTabAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }