Refactor Vulkan image, texture, RTs so that create and getter handles match.

src/gpu/vk/GrVkPipelineState.h

Index: src/gpu/vk/GrVkPipelineState.h
diff --git a/src/gpu/vk/GrVkPipelineState.h b/src/gpu/vk/GrVkPipelineState.h
index d0b0f564de5b22a4b27edc34b3e5cd16b3851d7a..89d7adc7c670d7552a756dd02beb00f923fe71eb 100644
--- a/src/gpu/vk/GrVkPipelineState.h
+++ b/src/gpu/vk/GrVkPipelineState.h
@@ -265,7 +265,7 @@ private:
     // GrVkResources used for sampling textures
     SkTDArray<GrVkSampler*> fSamplers;
     SkTDArray<const GrVkImageView*> fTextureViews;
-    SkTDArray<const GrVkImage::Resource*> fTextures;
+    SkTDArray<const GrVkResource*> fTextures;
 
     // Tracks the current render target uniforms stored in the vertex buffer.
     RenderTargetState fRenderTargetState;