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

chrome/browser/android/tab_android.cc

Index: chrome/browser/android/tab_android.cc
diff --git a/chrome/browser/android/tab_android.cc b/chrome/browser/android/tab_android.cc
index 773d1f047f9eb4250ad17419dfef609ff0b9519b..a362bf2a3c2a0d1334a986d94f09d0bc6a929b37 100644
--- a/chrome/browser/android/tab_android.cc
+++ b/chrome/browser/android/tab_android.cc
@@ -21,6 +21,7 @@
 #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"
@@ -30,6 +31,7 @@
 #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"
@@ -461,6 +463,15 @@ TabAndroid::TabLoadStatus TabAndroid::LoadUrl(JNIEnv* env,
           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;