Blimp Settings framework on the c++ side

blimp/client/public/blimp_client_context.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 BLIMP_CLIENT_PUBLIC_BLIMP_CLIENT_CONTEXT_H_
 #define BLIMP_CLIENT_PUBLIC_BLIMP_CLIENT_CONTEXT_H_
 
 #include <memory>
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "blimp/client/public/blimp_client_context_delegate.h"
 #include "blimp/client/public/contents/blimp_contents.h"
 #include "components/keyed_service/core/keyed_service.h"
+#include "components/prefs/pref_registry_simple.h"
+#include "components/prefs/pref_service.h"
 #include "ui/gfx/native_widget_types.h"
 
 #if defined(OS_ANDROID)
 #include "base/android/jni_android.h"
 #endif  // defined(OS_ANDROID)
 
 namespace base {
 class SupportsUserData;
 }
 
@@ skipping 18 matching lines @@
   // linked in.
   // The |io_thread_task_runner| must be the task runner to use for IO
   // operations.
   // The |file_thread_task_runner| must be the task runner to use for file
   // operations.
   // |compositor_dependencies| is a support object that provides all embedder
   // dependencies required by internal compositors.
   static BlimpClientContext* Create(
       scoped_refptr<base::SingleThreadTaskRunner> io_thread_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> file_thread_task_runner,
-      std::unique_ptr<CompositorDependencies> compositor_dependencies);
+      std::unique_ptr<CompositorDependencies> compositor_dependencies,
+      PrefService* local_state);
+
+  // Register Blimp prefs. The implementation of this function depends on
+  // whether the core or dummy implementation of Blimp has been linked in.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
 
   // The delegate provides all the required functionality from the embedder.
   virtual void SetDelegate(BlimpClientContextDelegate* delegate) = 0;
 
   // Creates a new BlimpContents that will be shown in |window|.
   // TODO(mlliu): Currently we want to have a single BlimpContents. If there is
   // an existing contents, return nullptr (http://crbug.com/642558).
   virtual std::unique_ptr<BlimpContents> CreateBlimpContents(
       gfx::NativeWindow window) = 0;
 
   // Start authentication flow and connection to engine.
   virtual void Connect() = 0;
   virtual void ConnectWithAssignment(const Assignment& assignment) = 0;
 
  protected:
   BlimpClientContext() = default;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BlimpClientContext);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_PUBLIC_BLIMP_CLIENT_CONTEXT_H_