Revert of Dependencies are now added between the drawTargets in GrPipeline

src/gpu/GrDrawTarget.h

Index: src/gpu/GrDrawTarget.h
diff --git a/src/gpu/GrDrawTarget.h b/src/gpu/GrDrawTarget.h
index 32a3fc4fe14df1ea088865538cd1ae4ac7ca92d8..ec94da1f0e72f2351566979fac9d17c9f4211fe2 100644
--- a/src/gpu/GrDrawTarget.h
+++ b/src/gpu/GrDrawTarget.h
@@ -45,7 +45,7 @@
 public:
     // The context may not be fully constructed and should not be used during GrDrawTarget
     // construction.
-    GrDrawTarget(GrRenderTarget* rt, GrGpu* gpu, GrResourceProvider*);
+    GrDrawTarget(GrGpu* gpu, GrResourceProvider*);
 
     ~GrDrawTarget() override;
 
@@ -314,7 +314,6 @@
 
     // 'this' drawTarget relies on the output of the drawTargets in 'fDependencies'
     SkTDArray<GrDrawTarget*>                    fDependencies;
-    GrRenderTarget*                             fRenderTarget;
 
     typedef SkRefCnt INHERITED;
 };