Upstream Chrome on iOS source code [2/11].

ios/chrome/browser/sessions/tab_restore_service_delegate_provider_impl.mm

+// Copyright 2014 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 "ios/chrome/browser/sessions/tab_restore_service_delegate_provider_impl.h"
+
+#include "components/sessions/core/live_tab_context.h"
+#include "components/sessions/ios/ios_live_tab.h"
+#include "ios/chrome/browser/browser_state/chrome_browser_state.h"
+#include "ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios.h"
+#include "ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios_factory.h"
+#include "ios/chrome/browser/tabs/tab.h"
+#include "ios/chrome/browser/tabs/tab_model.h"
+#include "ios/chrome/browser/ui/browser_ios.h"
+#include "ios/chrome/browser/ui/browser_list_ios.h"
+#import "ios/web/public/web_state/web_state.h"
+
+namespace ios_internal {
+
+TabRestoreServiceDelegateProviderImpl::TabRestoreServiceDelegateProviderImpl() {
+}
+
+TabRestoreServiceDelegateProviderImpl::
+    ~TabRestoreServiceDelegateProviderImpl() {}
+
+sessions::LiveTabContext* TabRestoreServiceDelegateProviderImpl::Create(
+    ios::ChromeBrowserState* browser_state) {
+  return TabRestoreServiceDelegateImplIOSFactory::GetForBrowserState(
+      browser_state);
+}
+
+sessions::LiveTabContext*
+TabRestoreServiceDelegateProviderImpl::FindContextWithID(int32_t desired_id) {
+  for (BrowserListIOS::const_iterator iter = BrowserListIOS::begin();
+       iter != BrowserListIOS::end(); ++iter) {
+    id<BrowserIOS> browser = *iter;
+    if ([browser tabModel].sessionID.id() == desired_id) {
+      return TabRestoreServiceDelegateImplIOSFactory::GetForBrowserState(
+          [browser browserState]);
+    }
+  }
+  return NULL;
+}
+
+sessions::LiveTabContext*
+TabRestoreServiceDelegateProviderImpl::FindContextForTab(
+    const sessions::LiveTab* tab) {
+  const sessions::IOSLiveTab* requested_tab =
+      static_cast<const sessions::IOSLiveTab*>(tab);
+  for (BrowserListIOS::const_iterator iter = BrowserListIOS::begin();
+       iter != BrowserListIOS::end(); ++iter) {
+    id<BrowserIOS> browser = *iter;
+    for (Tab* current_tab in [browser tabModel]) {
+      if (current_tab.webState &&
+          current_tab.webState == requested_tab->web_state()) {
+        return TabRestoreServiceDelegateImplIOSFactory::GetForBrowserState(
+            [browser browserState]);
+      }
+    }
+  }
+  return NULL;
+}
+
+}  // namespace ios_internal