Snap for 4527419 from ab8ff75e2edb3120da2f9d7f244ade65d5ccb27b to oc-m2-release

Change-Id: I473d067f21e865dd5d4a23b8442c8ad4e38104f9
diff --git a/camera/libhdrplusclient/include/HdrPlusClient.h b/camera/libhdrplusclient/include/HdrPlusClient.h
index 40905cc..31f7124 100644
--- a/camera/libhdrplusclient/include/HdrPlusClient.h
+++ b/camera/libhdrplusclient/include/HdrPlusClient.h
@@ -143,6 +143,12 @@
     virtual void notifyFrameMetadata(uint32_t frameNumber, const camera_metadata_t &resultMetadata,
             bool lastMetadata=true) = 0;
 
+    /*
+     * Notify Easel has encountered a fatal error and HDR+ client should stop sending messages
+     * to Easel.
+     */
+    virtual void nofityEaselFatalError() = 0;
+
 private:
     // Disallow copy and assign.
     HdrPlusClient(const HdrPlusClient&) = delete;