Adding BlimpNavigationController to Tab

chrome/browser/android/blimp/blimp_client_context_factory.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_BLIMP_BLIMP_CLIENT_CONTEXT_FACTORY_H_
 #define CHROME_BROWSER_ANDROID_BLIMP_BLIMP_CLIENT_CONTEXT_FACTORY_H_
 
 #include "base/macros.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
@@ skipping 12 matching lines @@
 class BrowserContext;
 }  // namespace content
 
 // BlimpClientContextFactory is the main client class for interactive with
 // blimp.
 class BlimpClientContextFactory : public BrowserContextKeyedServiceFactory {
  public:
   // Returns singleton instance of BlimpClientContextFactory.
   static BlimpClientContextFactory* GetInstance();
 
-  // Returns the BlimpClientContext associated with |context|.
+  // Returns the BlimpClientContext associated with |context| or creates a new
+  // one if it doesn't exist.
   static blimp::client::BlimpClientContext* GetForBrowserContext(
       content::BrowserContext* context);
 
  private:
   friend struct base::DefaultSingletonTraits<BlimpClientContextFactory>;
 
   BlimpClientContextFactory();
   ~BlimpClientContextFactory() override;
 
   // BrowserContextKeyedServiceFactory overrides:
   KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpClientContextFactory);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_BLIMP_BLIMP_CLIENT_CONTEXT_FACTORY_H_