camera: Allow shutter sounds to be disabled from camera2 api

When using the connectLegacy binder interface (available only
through an @hide java api), then consider the camera to be in the
camera2 api legacy mode.

In legacy mode, allow disabling the shutter sound unconditionally.

Bug: 17109582
Change-Id: Ieb3fc61ff111d792cc657c018e278349c25472cf
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index cb98c96..a7328cf 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -452,14 +452,17 @@
      *
      * Returns OK on success, or a negative error code.
      */
-    status_t            connectHelperLocked(const sp<ICameraClient>& cameraClient,
-                                      int cameraId,
-                                      const String16& clientPackageName,
-                                      int clientUid,
-                                      int callingPid,
-                                      /*out*/
-                                      sp<Client>& client,
-                                      int halVersion = CAMERA_HAL_API_VERSION_UNSPECIFIED);
+    status_t            connectHelperLocked(
+            /*out*/
+            sp<Client>& client,
+            /*in*/
+            const sp<ICameraClient>& cameraClient,
+            int cameraId,
+            const String16& clientPackageName,
+            int clientUid,
+            int callingPid,
+            int halVersion = CAMERA_HAL_API_VERSION_UNSPECIFIED,
+            bool legacyMode = false);
 };
 
 } // namespace android