Revert of Make GrTextContext be owned by the GrDrawContext

src/image/SkImage_Gpu.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkImage_Gpu.h"
 #include "GrContext.h"
 #include "GrDrawContext.h"
@@ skipping 210 matching lines @@
         return NULL;
     }
 
     GrPaint paint;
     paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
     paint.addColorProcessor(GrYUVtoRGBEffect::Create(yTex, uTex, vTex, yuvSizes,
                                                      colorSpace))->unref();
 
     const SkRect rect = SkRect::MakeWH(SkIntToScalar(dstDesc.fWidth),
                                        SkIntToScalar(dstDesc.fHeight));
-    GrDrawContext* drawContext = ctx->drawContext();
-    drawContext->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, SkMatrix::I(), rect);
+    ctx->drawContext()->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, SkMatrix::I(),
+                                 rect);
     ctx->flushSurfaceWrites(dst);
     return SkNEW_ARGS(SkImage_Gpu, (dstDesc.fWidth, dstDesc.fHeight, kOpaque_SkAlphaType, dst, 0,
                                     budgeted));
 }