Add webusb notification UI code

chrome/browser/browser_process_impl.h

 // 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.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
@@ skipping 33 matching lines @@
 
 namespace gcm {
 class GCMDriver;
 }
 
 namespace policy {
 class BrowserPolicyConnector;
 class PolicyService;
 };
 
+namespace webusb {
+class WebUsbBrowserClient;
+};
+
 // Real implementation of BrowserProcess that creates and returns the services.
 class BrowserProcessImpl : public BrowserProcess,
                            public base::NonThreadSafe {
  public:
   // |local_state_task_runner| must be a shutdown-blocking task runner.
   BrowserProcessImpl(base::SequencedTaskRunner* local_state_task_runner,
                      const base::CommandLine& command_line);
   ~BrowserProcessImpl() override;
 
   // Called before the browser threads are created.
@@ skipping 250 matching lines @@
 #endif
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
   // Any change to this #ifdef must be reflected as well in
   // chrome/browser/memory/oom_priority_manager_browsertest.cc
   scoped_ptr<memory::OomPriorityManager> oom_priority_manager_;
 #endif
 
   ShellIntegration::DefaultWebClientState cached_default_web_client_state_;
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  scoped_ptr<webusb::WebUsbBrowserClient> webusb_browser_client_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_