Fix 2083478: Camera needs an auto-focus cancel API

Change-Id: I13bda991b32aee47e82b5cf9d43b3021c416a9a2
diff --git a/libs/ui/Camera.cpp b/libs/ui/Camera.cpp
index 12a7725..0c6d340 100644
--- a/libs/ui/Camera.cpp
+++ b/libs/ui/Camera.cpp
@@ -242,6 +242,14 @@
     return c->autoFocus();
 }
 
+status_t Camera::cancelAutoFocus()
+{
+    LOGV("cancelAutoFocus");
+    sp <ICamera> c = mCamera;
+    if (c == 0) return NO_INIT;
+    return c->cancelAutoFocus();
+}
+
 // take a picture
 status_t Camera::takePicture()
 {