arc-bridge: Introduce the ArcService class

chrome/browser/chromeos/arc/arc_settings_bridge.h

 // Copyright (c) 2015 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_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_IMPL_H_
-#define CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_IMPL_H_
+#ifndef CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/values.h"
 #include "chromeos/settings/timezone_settings.h"
 #include "components/arc/arc_bridge_service.h"
-#include "components/arc/settings/arc_settings_bridge.h"
+#include "components/arc/arc_service.h"
 
 namespace arc {
 
 namespace fontsizes {
 
 // The following values were obtained from chrome://settings and Android's
 // Display settings on Nov 2015. They are expected to remain stable.
 const float kAndroidFontScaleSmall = 0.85;
 const float kAndroidFontScaleNormal = 1;
 const float kAndroidFontScaleLarge = 1.15;
 const float kAndroidFontScaleHuge = 1.3;
 const int kChromeFontSizeNormal = 16;
 const int kChromeFontSizeLarge = 20;
 const int kChromeFontSizeVeryLarge = 24;
 
 // Android has only a single float value for system-wide font size
 // (font_scale).  Chrome has three main int pixel values that affect
 // system-wide font size.  We will take the largest font value of the three
 // main font values on Chrome and convert to an Android size.
 double ConvertFontSizeChromeToAndroid(int default_size,
                                       int default_fixed_size,
                                       int minimum_size);
 
 }  // namespace fontsizes
 
 // Listens to changes for select Chrome settings (prefs) that Android cares
 // about and sends the new values to Android to keep the state in sync.
-class ArcSettingsBridgeImpl
-    : public ArcSettingsBridge,
-      public ArcBridgeService::Observer,
-      public chromeos::system::TimezoneSettings::Observer {
+class ArcSettingsBridge : public ArcService,
+                          public ArcBridgeService::Observer,
+                          public chromeos::system::TimezoneSettings::Observer {
  public:
-  ArcSettingsBridgeImpl() = default;
-
-  ~ArcSettingsBridgeImpl() override;
-
-  // Starts listening to state changes of the ArcBridgeService.
-  // This must be called before the bridge service starts bootstrapping.
-  void StartObservingBridgeServiceChanges() override;
+  explicit ArcSettingsBridge(ArcBridgeService* bridge_service);
+  ~ArcSettingsBridge() override;
 
   // Called when a Chrome pref we have registered an observer for has changed.
   // Obtains the new pref value and sends it to Android.
   void OnPrefChanged(const std::string& pref_name) const;
 
   // ArcBridgeService::Observer
   void OnStateChanged(ArcBridgeService::State state) override;
   void OnSettingsInstanceReady() override;
 
   // TimezoneSettings::Observer
@@ skipping 19 matching lines @@
   // Returns the integer value of the pref.  pref_name must exist.
   int GetIntegerPref(const std::string& pref_name) const;
 
   // Sends a broadcast to the ArcSettings app in Android.
   void SendSettingsBroadcast(const std::string& action,
                              const base::DictionaryValue& extras) const;
 
   // Manages pref observation registration.
   PrefChangeRegistrar registrar_;
 
-  DISALLOW_COPY_AND_ASSIGN(ArcSettingsBridgeImpl);
+  DISALLOW_COPY_AND_ASSIGN(ArcSettingsBridge);
 };
 
 }  // namespace arc
 
-#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_IMPL_H_
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_H_