Remove duplicate member of GrVkDrawableInfo struct.

Bug: skia:
Change-Id: I81a38f9920f89f4749fc58458b85a29714cec7a9
Reviewed-on: https://skia-review.googlesource.com/c/174584
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/vk/GrVkGpuCommandBuffer.cpp b/src/gpu/vk/GrVkGpuCommandBuffer.cpp
index 1d6d585..b44dbc1 100644
--- a/src/gpu/vk/GrVkGpuCommandBuffer.cpp
+++ b/src/gpu/vk/GrVkGpuCommandBuffer.cpp
@@ -802,7 +802,7 @@
     GrVkDrawableInfo vkInfo;
     vkInfo.fSecondaryCommandBuffer = cbInfo.currentCmdBuf()->vkCommandBuffer();
     vkInfo.fCompatibleRenderPass = cbInfo.fRenderPass->vkRenderPass();
-    SkAssertResult(cbInfo.fRenderPass->colorAttachmentIndex(&vkInfo.fImageAttachmentIndex));
+    SkAssertResult(cbInfo.fRenderPass->colorAttachmentIndex(&vkInfo.fColorAttachmentIndex));
     vkInfo.fFormat = targetImage->imageFormat();
     vkInfo.fDrawBounds = &bounds;