Remove redundant auto rt object in skpaint2grpaintshader function.

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 86c8ba90f8a24c18f14eb20dc03256f341d50aeb..1e78a70680f2b5d829ff1bfbc0fe9f3e4e503dc5 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -505,10 +505,9 @@ inline bool skPaint2GrPaintShader(SkGpuDevice* dev,
         return skPaint2GrPaintNoShader(dev, skPaint, false, constantColor, grPaint);
     }
 
-    // SkShader::asNewEffect() may do offscreen rendering. Setup default drawing state
-    // Also require shader to set the render target .
+    // SkShader::asNewEffect() may do offscreen rendering. Setup default drawing state and require
+    // the shader to set a render target .
     GrContext::AutoWideOpenIdentityDraw awo(dev->context(), NULL);

[bsalomon, 2014/01/13 14:47:10]

this NULL param to awo() is the rt, so the art below is redundant.

-    GrContext::AutoRenderTarget(dev->context(), NULL);
 
     // setup the shader as the first color effect on the paint
     SkAutoTUnref<GrEffectRef> effect(shader->asNewEffect(dev->context(), skPaint));