[Sync] Introduce SyncedSessionWindow type.

chrome/browser/android/foreign_session_helper.cc

 // Copyright 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.
 
 #include "chrome/browser/android/foreign_session_helper.h"
 
 #include <jni.h>
 #include <stddef.h>
 
 #include "base/android/jni_string.h"
@@ skipping 57 matching lines @@
   for (const auto& tab_ptr : window.tabs) {
     const sessions::SessionTab& session_tab = *(tab_ptr.get());
     if (!ShouldSkipTab(session_tab))
       return false;
   }
   return true;
 }
 
 bool ShouldSkipSession(const SyncedSession& session) {
   for (const auto& window_pair : session.windows) {
-    const sessions::SessionWindow& window = *(window_pair.second.get());
+    const sessions::SessionWindow& window = window_pair.second->wrapped_window;
     if (!ShouldSkipWindow(window))
       return false;
   }
   return true;
 }
 
 void CopyTabToJava(
     JNIEnv* env,
     const sessions::SessionTab& tab,
     ScopedJavaLocalRef<jobject>& j_window) {
@@ skipping 24 matching lines @@
 
     CopyTabToJava(env, session_tab, j_window);
   }
 }
 
 void CopySessionToJava(
     JNIEnv* env,
     const SyncedSession& session,
     ScopedJavaLocalRef<jobject>& j_session) {
   for (const auto& window_pair : session.windows) {
-    const sessions::SessionWindow& window = *(window_pair.second.get());
+    const sessions::SessionWindow& window = window_pair.second->wrapped_window;
 
     if (ShouldSkipWindow(window))
       continue;
 
     ScopedJavaLocalRef<jobject> last_pushed_window;
     last_pushed_window.Reset(Java_ForeignSessionHelper_pushWindow(
         env, j_session, window.timestamp.ToJavaTime(), window.window_id.id()));
 
     CopyWindowToJava(env, window, last_pushed_window);
   }
@@ skipping 184 matching lines @@
     const JavaParamRef<jstring>& session_tag) {
   OpenTabsUIDelegate* open_tabs = GetOpenTabsUIDelegate(profile_);
   if (open_tabs)
     open_tabs->DeleteForeignSession(ConvertJavaStringToUTF8(env, session_tag));
 }
 
 // static
 bool ForeignSessionHelper::RegisterForeignSessionHelper(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }