workaround [3201922] display not on: log full of gralloc errors (DO NOT MERGE)

we make sure to call compositionComplete after everytime we do
composition with the GPU (even for the screenshot case), which is
where the buffer locks are released.

Change-Id: I450430d1e4d1ee9ce1023970642378c42cdcfa4c
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index af0f95a..664e5ad 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -406,6 +406,7 @@
         logger.log(GraphicLog::SF_REPAINT_DONE, index);
     } else {
         // pretend we did the post
+        hw.compositionComplete();
         unlockClients();
         usleep(16667); // 60 fps period
     }
@@ -2172,6 +2173,9 @@
     glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0);
     glDeleteRenderbuffersOES(1, &tname);
     glDeleteFramebuffersOES(1, &name);
+
+    hw.compositionComplete();
+
     return result;
 }