Support Ycbcr sampler on Fuchsia.

Bug: 154346346
Test: fx shell run "fuchsia-pkg://fuchsia.com/escher_waterfall#meta/escher_waterfall.cmx"
Merged-In: I6e7239299c8ef0031d0b3431fccc1be9d6faff6d
Change-Id: I5cf7276cf812f5c761025b2d833d550b3c78f1e5
diff --git a/system/vulkan_enc/ResourceTracker.cpp b/system/vulkan_enc/ResourceTracker.cpp
index 40f0051..8bd4b20 100644
--- a/system/vulkan_enc/ResourceTracker.cpp
+++ b/system/vulkan_enc/ResourceTracker.cpp
@@ -2775,7 +2775,7 @@
         VkSamplerCreateInfo localCreateInfo = vk_make_orphan_copy(*pCreateInfo);
         vk_struct_chain_iterator structChainIter = vk_make_chain_iterator(&localCreateInfo);
 
-#ifdef VK_USE_PLATFORM_ANDROID_KHR
+#if defined(VK_USE_PLATFORM_ANDROID_KHR) || defined(VK_USE_PLATFORM_FUCHSIA_KHR)
         VkSamplerYcbcrConversionInfo localVkSamplerYcbcrConversionInfo;
         const VkSamplerYcbcrConversionInfo* samplerYcbcrConversionInfo =
             vk_find_struct<VkSamplerYcbcrConversionInfo>(pCreateInfo);