While loading url in current tab should check if any prerender page avaliable.

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"
@@ skipping 61 matching lines @@
       create_params.opener = params.source_contents;
   }
   if (params.disposition == NEW_BACKGROUND_TAB)
     create_params.initially_hidden = true;
 
   WebContents* target_contents = WebContents::Create(create_params);
 
   return target_contents;
 }
 
+bool MaybeSwapWithPrerender(const GURL& url, chrome::NavigateParams* params) {
+  Profile* profile =
+      Profile::FromBrowserContext(params->target_contents->GetBrowserContext());
+
+  prerender::PrerenderManager* prerender_manager =
+      prerender::PrerenderManagerFactory::GetForProfile(profile);
+  if (!prerender_manager) {
+    return false;
+  } else {

[Bernhard Bauer, 2014/07/31 08:11:00]

Don't put an "else" after a branch that ends with a return statement; Just move
the "else" branch one scope up. And braces are unnecessary for one-line bodies.

[Jitu( very slow this week), 2014/07/31 08:19:47]

Done.

+    return prerender_manager->MaybeUsePrerenderedPage(url, params);
+  }
+}
+
 }  // namespace
 
 TabAndroid* TabAndroid::FromWebContents(content::WebContents* web_contents) {
   CoreTabHelper* core_tab_helper = CoreTabHelper::FromWebContents(web_contents);
   if (!core_tab_helper)
     return NULL;
 
   CoreTabHelperDelegate* core_delegate = core_tab_helper->delegate();
   if (!core_delegate)
     return NULL;
@@ skipping 88 matching lines @@
   Java_Tab_setSyncId(env, weak_java_tab_.get(env).obj(), sync_id);
 }
 
 void TabAndroid::HandlePopupNavigation(chrome::NavigateParams* params) {
   if (params->disposition != SUPPRESS_OPEN &&
       params->disposition != SAVE_TO_DISK &&
       params->disposition != IGNORE_ACTION) {
     if (!params->url.is_empty()) {
       bool was_blocked = false;
       GURL url(params->url);
-      NavigationController::LoadURLParams load_url_params(url);
-      MakeLoadURLParams(params, &load_url_params);
       if (params->disposition == CURRENT_TAB) {
-        web_contents_.get()->GetController().LoadURLWithParams(load_url_params);
+        params->target_contents = web_contents_.get();
+        if (!MaybeSwapWithPrerender(url, params)) {
+          NavigationController::LoadURLParams load_url_params(url);
+          MakeLoadURLParams(params, &load_url_params);
+          params->target_contents->GetController().LoadURLWithParams(
+              load_url_params);
+        }
       } else {
         params->target_contents = CreateTargetContents(*params, url);
+        NavigationController::LoadURLParams load_url_params(url);
+        MakeLoadURLParams(params, &load_url_params);
         params->target_contents->GetController().LoadURLWithParams(
             load_url_params);
         web_contents_delegate_->AddNewContents(params->source_contents,
                                                params->target_contents,
                                                params->disposition,
                                                params->window_bounds,
                                                params->user_gesture,
                                                &was_blocked);
         if (was_blocked)
           params->target_contents = NULL;
@@ skipping 375 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);
 }