Revert of Update testing frameworks/tests for MDB

src/gpu/GrTest.cpp

Index: src/gpu/GrTest.cpp
diff --git a/src/gpu/GrTest.cpp b/src/gpu/GrTest.cpp
index 448c1f44b5edaecba604404055b6b58eb5ec9f0d..6e9df211fa93c4e8abcee595c37b9f5aa13f3a63 100644
--- a/src/gpu/GrTest.cpp
+++ b/src/gpu/GrTest.cpp
@@ -44,12 +44,11 @@
 }
 };
 
-void GrTestTarget::init(GrContext* ctx, GrDrawTarget* target, GrRenderTarget* rt) {
+void GrTestTarget::init(GrContext* ctx, GrDrawTarget* target) {
     SkASSERT(!fContext);
 
     fContext.reset(SkRef(ctx));
     fDrawTarget.reset(SkRef(target));
-    fRenderTarget.reset(SkRef(rt));
 }
 
 void GrContext::getTestTarget(GrTestTarget* tar) {
@@ -58,22 +57,8 @@
     // then disconnects. This would help prevent test writers from mixing using the returned
     // GrDrawTarget and regular drawing. We could also assert or fail in GrContext drawing methods
     // until ~GrTestTarget().
-    GrSurfaceDesc desc;
-    desc.fFlags = kRenderTarget_GrSurfaceFlag;
-    desc.fWidth = 32;
-    desc.fHeight = 32;
-    desc.fConfig = kRGBA_8888_GrPixelConfig;
-    desc.fSampleCnt = 0;
-
-    GrTexture* texture = this->textureProvider()->createTexture(desc, false, nullptr, 0);
-    if (nullptr == texture) {
-        return;
-    }
-    SkASSERT(nullptr != texture->asRenderTarget());
-    GrRenderTarget* rt = texture->asRenderTarget();
-
-    SkAutoTUnref<GrDrawTarget> dt(fDrawingManager->newDrawTarget(rt));
-    tar->init(this, dt, rt);
+    SkAutoTUnref<GrDrawTarget> dt(fDrawingManager->newDrawTarget(nullptr));
+    tar->init(this, dt);
 }
 
 void GrContext::setTextBlobCacheLimit_ForTesting(size_t bytes) {