Add webusb notification UI code

chrome/browser/chrome_browser_main.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.
 
 #ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 #define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/field_trial.h"
@@ skipping 27 matching lines @@
 
 #if defined(OS_WIN)
 extern const char kMissingLocaleDataMessage[];
 #endif
 }
 
 namespace metrics {
 class TrackingSynchronizer;
 }
 
+namespace webusb {
+class WebUsbBrowserClient;
+class WebUsbDetector;
+}
+
 class ChromeBrowserMainParts : public content::BrowserMainParts {
  public:
   ~ChromeBrowserMainParts() override;
 
   // Add additional ChromeBrowserMainExtraParts.
   virtual void AddParts(ChromeBrowserMainExtraParts* parts);
 
  protected:
   explicit ChromeBrowserMainParts(
       const content::MainFunctionParams& parameters);
@@ skipping 73 matching lines @@
 
   // Statistical testing infrastructure for the entire browser. NULL until
   // SetupMetricsAndFieldTrials is called.
   scoped_ptr<base::FieldTrialList> field_trial_list_;
 
   ChromeBrowserFieldTrials browser_field_trials_;
 
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
   // A monitor for attributing power consumption to origins.
   scoped_ptr<ProcessPowerCollector> process_power_collector_;
+
+  scoped_ptr<webusb::WebUsbBrowserClient> webusb_browser_client_;
+  scoped_ptr<webusb::WebUsbDetector> webusb_detector_;
 #endif
 
   // Vector of additional ChromeBrowserMainExtraParts.
   // Parts are deleted in the inverse order they are added.
   std::vector<ChromeBrowserMainExtraParts*> chrome_extra_parts_;
 
   // A profiler that periodically samples stack traces. Used to sample startup
   // behavior.
   base::StackSamplingProfiler sampling_profiler_;
 
@@ skipping 25 matching lines @@
   PrefService* local_state_;
   base::FilePath user_data_dir_;
 
   // Members needed across shutdown methods.
   bool restart_last_session_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
 };
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_