Navigation transitions: Place transition page in same process as destination page.

chrome/browser/android/content_view_util.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/content_view_util.h"
 
 #include "base/android/jni_android.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
+#include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/ContentViewUtil_jni.h"
 
 static jlong CreateNativeWebContents(
     JNIEnv* env, jclass clazz, jboolean incognito, jboolean initially_hidden) {
   Profile* profile = g_browser_process->profile_manager()->GetLastUsedProfile();
   if (incognito)
     profile = profile->GetOffTheRecordProfile();
 
   content::WebContents::CreateParams params(profile);
   params.initially_hidden = static_cast<bool>(initially_hidden);
   return reinterpret_cast<intptr_t>(content::WebContents::Create(params));
 }
 
+static jlong CreateNativeWebContentsWithSharedSiteInstance(
+    JNIEnv* env,
+    jclass clazz,
+    jobject jcontent_view_core) {
+  content::ContentViewCore* content_view_core =
+      content::ContentViewCore::GetNativeContentViewCore(env,
+                                                         jcontent_view_core);
+  CHECK(content_view_core);
+
+  Profile* profile = Profile::FromBrowserContext(
+      content_view_core->GetWebContents()->GetBrowserContext());
+
+  content::WebContents::CreateParams params(
+      profile, content_view_core->GetWebContents()->GetSiteInstance());
+
+  return reinterpret_cast<intptr_t>(content::WebContents::Create(params));
+}
+
 static void DestroyNativeWebContents(
     JNIEnv* env, jclass clazz, jlong web_contents_ptr) {
   content::WebContents* web_contents =
       reinterpret_cast<content::WebContents*>(web_contents_ptr);
   delete web_contents;
 }
 
 bool RegisterContentViewUtil(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }