Revert of Dependencies are now added between the drawTargets in GrPipeline

src/gpu/GrRenderTarget.cpp

Index: src/gpu/GrRenderTarget.cpp
diff --git a/src/gpu/GrRenderTarget.cpp b/src/gpu/GrRenderTarget.cpp
index d519f028f0f8780f130df2879c2f70058b1bc63a..ad56cf761fff6e62afc5380d2532d9c82af48708 100644
--- a/src/gpu/GrRenderTarget.cpp
+++ b/src/gpu/GrRenderTarget.cpp
@@ -71,10 +71,7 @@
 
 void GrRenderTarget::setLastDrawTarget(GrDrawTarget* dt) {
     if (fLastDrawTarget) {
-        // The non-MDB world never closes so we can't check this condition
-#ifdef ENABLE_MDB
         SkASSERT(fLastDrawTarget->isClosed());
-#endif
     }
 
     fLastDrawTarget = dt;