Merge cherrypicks of [11520371, 11520372, 11521176, 11521177, 11520373, 11520374, 11521196, 11521216, 11520730, 11521236, 11520430, 11521256, 11521276, 11520277, 11520278] into qt-qpr3-release

Change-Id: Ifa25b35fd5704f786d08d85590f93b017cfa7f82
diff --git a/services/surfaceflinger/Client.cpp b/services/surfaceflinger/Client.cpp
index 6bfd302..c526f7f 100644
--- a/services/surfaceflinger/Client.cpp
+++ b/services/surfaceflinger/Client.cpp
@@ -88,11 +88,6 @@
                                          sp<IGraphicBufferProducer>* gbp) {
     if (mFlinger->authenticateSurfaceTexture(parent) == false) {
         ALOGE("failed to authenticate surface texture");
-        // The extra parent layer check below before returning is to help with debugging
-        // b/134888387. Once the bug is fixed the check can be deleted.
-        if ((static_cast<MonitoredProducer*>(parent.get()))->getLayer() == nullptr) {
-            ALOGE("failed to find parent layer");
-        }
         return BAD_VALUE;
     }