AudioEffect: Add process callback

Add a callback method to IEffectClient interface to notify the
controlling AudioEffect client when the effect engine has processed
frames in the audio mixer thread.

Bug: 188502620
Test: make
Change-Id: Ibf3078b2fc779102eb8f70698e6ccc308c6f0bad
diff --git a/services/audioflinger/DeviceEffectManager.h b/services/audioflinger/DeviceEffectManager.h
index c222de8..5cfe2fb 100644
--- a/services/audioflinger/DeviceEffectManager.h
+++ b/services/audioflinger/DeviceEffectManager.h
@@ -37,7 +37,8 @@
                 const std::map<audio_patch_handle_t, PatchPanel::Patch>& patches,
                 int *enabled,
                 status_t *status,
-                bool probe);
+                bool probe,
+                bool notifyFramesProcessed);
     void createAudioPatch(audio_patch_handle_t handle, const PatchPanel::Patch& patch);
     void releaseAudioPatch(audio_patch_handle_t handle);