[Background Sync] Add renderer code to interface between JS API and back-end service

content/child/blink_platform_impl.cc

 // 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 "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
@@ skipping 13 matching lines @@
 #include "base/synchronization/waitable_event.h"
 #include "base/sys_info.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "blink/public/resources/grit/blink_image_resources.h"
 #include "blink/public/resources/grit/blink_resources.h"
 #include "components/mime_util/mime_util.h"
 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
 #include "content/app/resources/grit/content_resources.h"
 #include "content/app/strings/grit/content_strings.h"
+#include "content/child/background_sync/background_sync_provider.h"
+#include "content/child/background_sync/background_sync_provider_thread_proxy.h"
 #include "content/child/bluetooth/web_bluetooth_impl.h"
 #include "content/child/child_thread_impl.h"
 #include "content/child/content_child_helpers.h"
 #include "content/child/geofencing/web_geofencing_provider_impl.h"
 #include "content/child/navigator_connect/navigator_connect_provider.h"
 #include "content/child/notifications/notification_dispatcher.h"
 #include "content/child/notifications/notification_manager.h"
 #include "content/child/permissions/permission_dispatcher.h"
 #include "content/child/permissions/permission_dispatcher_thread_proxy.h"
 #include "content/child/push_messaging/push_dispatcher.h"
@@ skipping 400 matching lines @@
     geofencing_provider_.reset(new WebGeofencingProviderImpl(
         ChildThreadImpl::current()->thread_safe_sender()));
     bluetooth_.reset(
         new WebBluetoothImpl(ChildThreadImpl::current()->thread_safe_sender()));
     thread_safe_sender_ = ChildThreadImpl::current()->thread_safe_sender();
     notification_dispatcher_ =
         ChildThreadImpl::current()->notification_dispatcher();
     push_dispatcher_ = ChildThreadImpl::current()->push_dispatcher();
     permission_client_.reset(new PermissionDispatcher(
         ChildThreadImpl::current()->service_registry()));
+    sync_provider_.reset(new BackgroundSyncProvider(
+        ChildThreadImpl::current()->service_registry()));
   }
 
   if (main_thread_task_runner_.get()) {
     shared_timer_.SetTaskRunner(main_thread_task_runner_);
   }
 }
 
 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
   DCHECK(!current_thread_slot_.Get());
   current_thread_slot_.Set(thread);
@@ skipping 706 matching lines @@
   if (!permission_client_.get())
     return nullptr;
 
   if (IsMainThread())
     return permission_client_.get();
 
   return PermissionDispatcherThreadProxy::GetThreadInstance(
       main_thread_task_runner_.get(), permission_client_.get());
 }
 
+blink::WebSyncProvider* BlinkPlatformImpl::backgroundSyncProvider() {
+  if (!sync_provider_.get())
+    return nullptr;
+
+  if (IsMainThread())
+    return sync_provider_.get();
+
+  return BackgroundSyncProviderThreadProxy::GetThreadInstance(
+      main_thread_task_runner_.get(), sync_provider_.get());
+}
+
 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
   return &native_theme_engine_;
 }
 
 WebFallbackThemeEngine* BlinkPlatformImpl::fallbackThemeEngine() {
   return &fallback_theme_engine_;
 }
 
 blink::Platform::FileHandle BlinkPlatformImpl::databaseOpenFile(
     const blink::WebString& vfs_file_name, int desired_flags) {
@@ skipping 153 matching lines @@
   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
       static_cast<ui::DomCode>(dom_code)));
 }
 
 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
       code.utf8().data()));
 }
 
 }  // namespace content