Start on simplifying generateGeometry() overrides

src/gpu/GrDrawTarget.cpp

Index: src/gpu/GrDrawTarget.cpp
diff --git a/src/gpu/GrDrawTarget.cpp b/src/gpu/GrDrawTarget.cpp
index 850309797cf7d7e63b502aaaac2757dc4962e5a4..7ae2c99825109125117da824b5b99e9a52f1b7f3 100644
--- a/src/gpu/GrDrawTarget.cpp
+++ b/src/gpu/GrDrawTarget.cpp
@@ -37,16 +37,8 @@ GrDrawTarget::DrawInfo& GrDrawTarget::DrawInfo::operator =(const DrawInfo& di) {
     fVerticesPerInstance    = di.fVerticesPerInstance;
     fIndicesPerInstance     = di.fIndicesPerInstance;
 
-    if (di.fDevBounds) {
-        SkASSERT(di.fDevBounds == &di.fDevBoundsStorage);
-        fDevBoundsStorage = di.fDevBoundsStorage;
-        fDevBounds = &fDevBoundsStorage;
-    } else {
-        fDevBounds = NULL;
-    }
-
-    this->setVertexBuffer(di.vertexBuffer());
-    this->setIndexBuffer(di.indexBuffer());
+    fVertexBuffer.reset(di.vertexBuffer());
+    fIndexBuffer.reset(di.indexBuffer());
 
     return *this;
 }