Refactor to separate backend object lifecycle and GpuResource budget decision

include/gpu/GrRenderTarget.h

Index: include/gpu/GrRenderTarget.h
diff --git a/include/gpu/GrRenderTarget.h b/include/gpu/GrRenderTarget.h
index d39d284bd8259a90a8b43b93f1ca28ca65e13f7d..eb9f142211c9aef75f0e637ab655737dabd57d02 100644
--- a/include/gpu/GrRenderTarget.h
+++ b/include/gpu/GrRenderTarget.h
@@ -156,9 +156,9 @@ public:
     GrDrawTarget* getLastDrawTarget() { return fLastDrawTarget; }
 
 protected:
-    GrRenderTarget(GrGpu* gpu, LifeCycle lifeCycle, const GrSurfaceDesc& desc,
+    GrRenderTarget(GrGpu* gpu, const GrSurfaceDesc& desc,
                    SampleConfig sampleConfig, GrStencilAttachment* stencil = nullptr)
-        : INHERITED(gpu, lifeCycle, desc)
+        : INHERITED(gpu, desc)
         , fStencilAttachment(stencil)
         , fSampleConfig(sampleConfig)
         , fLastDrawTarget(nullptr) {