Add a mojo bridge for PersistentPrefStore.

content/browser/browser_main_runner.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 "content/public/browser/browser_main_runner.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/leak_annotations.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/profiler/scoped_profile.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/time/time.h"
 #include "base/trace_event/heap_profiler_allocation_context_tracker.h"
 #include "base/trace_event/trace_event.h"
 #include "base/tracked_objects.h"
 #include "build/build_config.h"
 #include "components/tracing/common/trace_config_file.h"
 #include "components/tracing/common/tracing_switches.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/browser_shutdown_profile_dumper.h"
 #include "content/browser/notification_service_impl.h"
 #include "content/public/browser/tracing_controller.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
+#include "mojo/public/cpp/bindings/sync_call_restrictions.h"
 #include "third_party/skia/include/core/SkGraphics.h"
 #include "ui/base/ime/input_method_initializer.h"
 
 #if defined(OS_ANDROID)
 #include "content/browser/android/tracing_controller_android.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #include "ui/base/win/scoped_ole_initializer.h"
@@ skipping 13 matching lines @@
  public:
   BrowserMainRunnerImpl()
       : initialization_started_(false), is_shutdown_(false) {}
 
   ~BrowserMainRunnerImpl() override {
     if (initialization_started_ && !is_shutdown_)
       Shutdown();
   }
 
   int Initialize(const MainFunctionParams& parameters) override {
+    mojo::SyncCallRestrictions::ScopedAllowSyncCall allow_sync_calls;
     SCOPED_UMA_HISTOGRAM_LONG_TIMER(
         "Startup.BrowserMainRunnerImplInitializeLongTime");
 
     // TODO(vadimt, yiyaoliu): Remove all tracked_objects references below once
     // crbug.com/453640 is fixed.
     tracked_objects::ThreadData::InitializeThreadContext(kMainThreadName);
     base::trace_event::AllocationContextTracker::SetCurrentThreadName(
         kMainThreadName);
     TRACK_SCOPED_REGION(
         "Startup", "BrowserMainRunnerImpl::Initialize");
@@ skipping 166 matching lines @@
 BrowserMainRunner* BrowserMainRunner::Create() {
   return new BrowserMainRunnerImpl();
 }
 
 // static
 bool BrowserMainRunner::ExitedMainMessageLoop() {
   return g_exited_main_message_loop;
 }
 
 }  // namespace content