Move more Mojo bindings helpers out of internal namespace

mojo/public/cpp/bindings/lib/sync_handle_watcher.cc

 // Copyright 2016 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 "mojo/public/cpp/bindings/lib/sync_handle_watcher.h"
+#include "mojo/public/cpp/bindings/sync_handle_watcher.h"
 
 #include "base/logging.h"
 
 namespace mojo {
-namespace internal {
 
 SyncHandleWatcher::SyncHandleWatcher(
     const Handle& handle,
     MojoHandleSignals handle_signals,
     const SyncHandleRegistry::HandleCallback& callback)
     : handle_(handle),
       handle_signals_(handle_signals),
       callback_(callback),
       registered_(false),
       register_request_count_(0),
@@ skipping 46 matching lines @@
 void SyncHandleWatcher::DecrementRegisterCount() {
   DCHECK_GT(register_request_count_, 0u);
 
   register_request_count_--;
   if (register_request_count_ == 0 && registered_) {
     registry_->UnregisterHandle(handle_);
     registered_ = false;
   }
 }
 
-}  // namespace internal
 }  // namespace mojo