Vulkan: Shader path for framebuffer-to-texture copy

Part 1 in a series of changes to perform image copies on the GPU.

Bug: angleproject:2958
Change-Id: I6264a880865c4738c0866f2dc71af63425fc4118
Reviewed-on: https://chromium-review.googlesource.com/c/1370724
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
diff --git a/src/libANGLE/renderer/vulkan/CommandGraph.h b/src/libANGLE/renderer/vulkan/CommandGraph.h
index cf17d9f..17d79bf 100644
--- a/src/libANGLE/renderer/vulkan/CommandGraph.h
+++ b/src/libANGLE/renderer/vulkan/CommandGraph.h
@@ -206,7 +206,7 @@
     angle::Result recordCommands(Context *context, CommandBuffer **commandBufferOut);
 
     // Begins a command buffer on the current graph node for in-RenderPass rendering.
-    // Currently only called from FramebufferVk::startNewRenderPass.
+    // Called from FramebufferVk::startNewRenderPass and UtilsVk functions.
     angle::Result beginRenderPass(Context *context,
                                   const Framebuffer &framebuffer,
                                   const gl::Rectangle &renderArea,