Make GrTextContext be owned by the GrDrawContext

src/image/SkImage_Gpu.cpp

Index: src/image/SkImage_Gpu.cpp
diff --git a/src/image/SkImage_Gpu.cpp b/src/image/SkImage_Gpu.cpp
index 4c3e1300c5c09ffc5e070691b12106dce6c04d3e..3d40a884593ff33f56e73bd79734a64f805487d3 100644
--- a/src/image/SkImage_Gpu.cpp
+++ b/src/image/SkImage_Gpu.cpp
@@ -228,8 +228,8 @@ SkImage* SkImage::NewFromYUVTexturesCopy(GrContext* ctx , SkYUVColorSpace colorS
 
     const SkRect rect = SkRect::MakeWH(SkIntToScalar(dstDesc.fWidth),
                                        SkIntToScalar(dstDesc.fHeight));
-    ctx->drawContext()->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, SkMatrix::I(),
-                                 rect);
+    GrDrawContext* drawContext = ctx->drawContext();
+    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));