Camera: Disallow dumping clients directly

Camera service dumps should only be initiated through
ICameraService::dump.

Bug: 26265403
Change-Id: If3ca4718ed74bf33ad8a416192689203029e2803
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index ad6a582..7f3691a 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -55,6 +55,9 @@
     class Client;
     class BasicClient;
 
+    // Event log ID
+    static const int SN_EVENT_LOG_ID = 0x534e4554;
+
     // Implementation of BinderService<T>
     static char const* getServiceName() { return "media.camera"; }
 
@@ -144,7 +147,10 @@
             return mRemoteBinder;
         }
 
-        virtual status_t      dump(int fd, const Vector<String16>& args) = 0;
+        // Disallows dumping over binder interface
+        virtual status_t      dump(int fd, const Vector<String16>& args);
+        // Internal dump method to be called by CameraService
+        virtual status_t      dumpClient(int fd, const Vector<String16>& args) = 0;
 
     protected:
         BasicClient(const sp<CameraService>& cameraService,