vulkan: KHR_swapchain_front_buffered -> KHR_shared_presentable_image

Tracking Khronos naming churn
V2: More churn, no longer shared_image_swapchain.

Test: build
Change-Id: I88b11b47f2fd2f96e1f27f900a65b599aec470af
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index a46f46e..e4e242a 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -474,7 +474,7 @@
             case ProcHook::EXTENSION_UNKNOWN:
                 // HAL's extensions
                 break;
-            case ProcHook::KHR_swapchain_front_buffered:
+            case ProcHook::KHR_shared_presentable_image:
                 // Exposed by HAL, but API surface is all in the loader
                 break;
             default:
@@ -495,7 +495,7 @@
                 hook_extensions_.set(ProcHook::KHR_swapchain);
 
             // Exposed by HAL, but API surface is all in the loader
-            if (ext_bit == ProcHook::KHR_swapchain_front_buffered)
+            if (ext_bit == ProcHook::KHR_shared_presentable_image)
                 hook_extensions_.set(ext_bit);
 
             hal_extensions_.set(ext_bit);