Fix GrGradientEffect::isValid()

This was relying on TextureSampler::proxy() which crashes if the proxy is not valid.

Bug: skia:
Change-Id: I8452f5cea3a71b5ced15259aede52a44ab152cf2
Reviewed-on: https://skia-review.googlesource.com/19403
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/shaders/gradients/SkGradientShaderPriv.h b/src/shaders/gradients/SkGradientShaderPriv.h
index 5e55316ed1..3322982708 100644
--- a/src/shaders/gradients/SkGradientShaderPriv.h
+++ b/src/shaders/gradients/SkGradientShaderPriv.h
@@ -442,7 +442,9 @@ protected:
     const GrCoordTransform& getCoordTransform() const { return fCoordTransform; }
 
     /** Checks whether the constructor failed to fully initialize the processor. */
-    bool isValid() const { return fColorType != kTexture_ColorType || fTextureSampler.proxy(); }
+    bool isValid() const {
+        return fColorType != kTexture_ColorType || fTextureSampler.isInitialized();
+    }
 
 private:
     static OptimizationFlags OptFlags(bool isOpaque);