arc-bridge: Implement IPC message for app launcher

components/arc/arc_bridge_service.h

Index: components/arc/arc_bridge_service.h
diff --git a/components/arc/arc_bridge_service.h b/components/arc/arc_bridge_service.h
index c562b478111d2164479e106cc1395fa297d231b0..ca819ca852d2de1a41c1b1da24bdc87c01c16f4b 100644
--- a/components/arc/arc_bridge_service.h
+++ b/components/arc/arc_bridge_service.h
@@ -78,6 +78,15 @@ class ArcBridgeService {
     // Called whenever ARC's availability has changed for this system.
     virtual void OnAvailableChanged(bool available) {}
 
+    // Called whenever ARC sends information about available apps.
+    virtual void OnAppsRefreshed(const std::vector<AppInfo>& apps) {}
+
+    // Called whenever ARC sends app icon data for specific scale factor.
+    virtual void OnAppIcon(const std::string& package,
+                           const std::string& activity,
+                           int scale_factor,
+                           const std::vector<uint8_t>& icon_png_data) {}
+
    protected:
     virtual ~Observer() {}
   };
@@ -133,6 +142,18 @@ class ArcBridgeService {
                                    const std::string& device_type,
                                    base::ScopedFD fd) = 0;
 
+  // Requests to refresh an app list.
+  virtual bool RefreshApps() = 0;
+
+  // Requests to launch an app.
+  virtual bool LaunchApp(const std::string& package,
+                         const std::string& activity) = 0;
+
+  // Request to load icon of specific scale_factor.
+  virtual bool RequestIcon(const std::string& package,
+                           const std::string& activity,
+                           int scale_factor) = 0;
+
  protected:
   // Changes the current state and notifies all observers.
   void SetState(State state);