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/api1/Camera2Client.h b/services/camera/libcameraservice/api1/Camera2Client.h
index 5ce757a..f5c3a30 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.h
+++ b/services/camera/libcameraservice/api1/Camera2Client.h
@@ -89,7 +89,8 @@
             int cameraFacing,
             int clientPid,
             uid_t clientUid,
-            int servicePid);
+            int servicePid,
+            bool legacyMode);
 
     virtual ~Camera2Client();
 
@@ -203,6 +204,7 @@
     bool mAfInMotion;
 
     /** Utility members */
+    bool mLegacyMode;
 
     // Wait until the camera device has received the latest control settings
     status_t syncWithDevice();