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This reverts commit 1ffb3583.

Reason for revert: This CL breaks Vulkan support for any client running
a Vulkan version earlier than 1.1. The reason for this is that in the
generator, we specify |'min_api_version': 'VK_VERSION_1_1'|, which gets
translated into |if (api_version >= VK_VERSION_1_1)|.

The issue here is that |api_version| is a Vulkan API version which is a
multi-part version number packed into a 32 bit int [1]. VK_VERSION_1_1
on the other hand, is defined as 1 [2], so the version check will
always pass. What we want here is actually VK_API_VERSION_1_1.

I will revert my CL and then upload a CL that fixes my code and all of
the existing code in this generator that uses VK_VERSION_1_1.

[1] https://vulkan.lunarg.com/doc/view/1.0.30.0/linux/vkspec.chunked/ch02s09.html
[2] https://cs.chromium.org/chromium/src/third_party/glfw/src/deps/vulkan/vulkan_core.h?l=3641&rcl=2de2589f910b1a85905f425be4d32f33cec092df

Original change's description:
> gpu: Load vk functions for querying image/buffer properties
> 
> This CL registers a few functions in the Vulkan binding generator script
> to be used for importing dma-bufs as VkImages [1] with the end
> goal of supporting WebGPU on Chrome OS. In particular, we add:
> 
> - vkGetPhysicalDeviceImageFormatProperties2: allows us to query if the
> physical device supports importing dma-bufs into Vulkan via the
> VK_EXTERNAL_MEMORY_HANDLE_TYPE_DMA_BUF_BIT_EXT flag [2].
> - vkGetMemoryFdPropertiesKHR: allows us to list the types of memory that
> our buffer backed by a dma-buf can be imported as.
> - vkGetImageMemoryRequirements2: allows us to list the types of memory
> supported by a given VkImage which can be compared to the output of
> vkGetMemoryFdPropertiesKHR to determine a suitable memory type for
> import.
> 
> [1] https://chromium-review.googlesource.com/c/chromium/src/+/1796049
> [2] https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VkExternalMemoryHandleTypeFlagBits.html
> 
> BUG=996470
> TEST=ran the script and used the newly bound functions
> 
> Change-Id: I0f61e531009596d7237153f203084639e649afd7
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1794142
> Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
> Reviewed-by: Peng Huang <penghuang@chromium.org>
> Commit-Queue: Brian Ho <hob@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#695296}

TBR=penghuang@chromium.org,dcastagna@chromium.org,hob@chromium.org

Change-Id: Ia1dd50f868aa482bfef6a60e63d0d696c6e309d3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 996470
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1796527Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Commit-Queue: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695385}