Minimum implementation of ARC clipboard Bridge

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 b11097b3f5baf2a146bf95b5f2a831314e649c9b..d54b60845786dfd02c2f285a848acf4ebbe6c43c 100644
--- a/components/arc/arc_bridge_service.h
+++ b/components/arc/arc_bridge_service.h
@@ -110,6 +110,22 @@ class ArcBridgeService {
     virtual ~AppObserver() {}
   };
 
+  // Notifies ARC Clipboard related events.
+  class ClipboardObserver {
+   public:
+    // Called whenever the Android clipboard content is changed. This is
+    // typically fired when a user initiates a "Copy" action.
+    virtual void OnSetClipboardContent(const ClipboardData& data) {}
+
+    // Called whenever the Android clipboard decides to update its content.
+    // This is typical triggered when a "Paste" action is fired or an app
+    // or service tries to retrieve the android clipboard content.
+    virtual void OnGetClipboardContent() {}
+
+   protected:
+    virtual ~ClipboardObserver() {}
+  };
+
   virtual ~ArcBridgeService();
 
   // Creates instance of |ArcBridgeService| for normal use.
@@ -151,6 +167,11 @@ class ArcBridgeService {
   void AddAppObserver(AppObserver* observer);
   void RemoveAppObserver(AppObserver* observer);
 
+  // Adds or removes ARC clipboard observers. This can only be called on the
+  // thread that this class was created on.
+  void AddClipboardObserver(ClipboardObserver* observer);
+  void RemoveClipboardObserver(ClipboardObserver* observer);
+
   // Gets the current state of the bridge service.
   State state() const { return state_; }
 
@@ -183,6 +204,9 @@ class ArcBridgeService {
                               const std::string& activity,
                               ScaleFactor scale_factor) = 0;
 
+  // Sends the Chrome clipboard content to Android side.
+  virtual bool SendClipboardContentToAndroid(const ClipboardData data) = 0;
+
  protected:
   ArcBridgeService();
 
@@ -197,10 +221,15 @@ class ArcBridgeService {
   }
 
   base::ObserverList<Observer>& observer_list() { return observer_list_; }
+
   base::ObserverList<NotificationObserver>& notification_observer_list() {
     return notification_observer_list_;
   }
 
+  base::ObserverList<ClipboardObserver>& clipboard_observer_list() {
+    return clipboard_observer_list_;
+  }
+
   base::ObserverList<AppObserver>& app_observer_list() {
     return app_observer_list_;
   }
@@ -213,6 +242,8 @@ class ArcBridgeService {
 
   base::ObserverList<AppObserver> app_observer_list_;
 
+  base::ObserverList<ClipboardObserver> clipboard_observer_list_;
+
   // If the ARC instance service is available.
   bool available_;