Vulkan: Make vk::ImageView pointers const

Bug: angleproject:3563
Change-Id: I8b6415dd9508941d093f36e7ded72d25f571b6f3
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1779204
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
diff --git a/src/libANGLE/renderer/vulkan/FramebufferVk.cpp b/src/libANGLE/renderer/vulkan/FramebufferVk.cpp
index 5ba7bc3..0615078 100644
--- a/src/libANGLE/renderer/vulkan/FramebufferVk.cpp
+++ b/src/libANGLE/renderer/vulkan/FramebufferVk.cpp
@@ -872,8 +872,8 @@
             // Blit depth. If shader stencil export is present, blit stencil as well.
             if (blitDepthBuffer || (blitStencilBuffer && hasShaderStencilExport))
             {
-                vk::ImageView *depth = blitDepthBuffer ? &depthView.get() : nullptr;
-                vk::ImageView *stencil =
+                const vk::ImageView *depth = blitDepthBuffer ? &depthView.get() : nullptr;
+                const vk::ImageView *stencil =
                     blitStencilBuffer && hasShaderStencilExport ? &stencilView.get() : nullptr;
 
                 ANGLE_TRY(utilsVk.depthStencilBlitResolve(contextVk, this, depthStencilImage, depth,