Setup system in Vulkan to reuse VkDescriptorSet allocations.

gyp/gpu.gypi

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # Include this gypi to include all 'gpu' files
 # The parent gyp/gypi file must define
 #       'skia_src_path'     e.g. skia/trunk/src
 #       'skia_include_path' e.g. skia/trunk/include
 #
 # The skia build defines these in common_variables.gypi
@@ skipping 439 matching lines @@
       '<(skia_include_path)/gpu/vk/GrVkTypes.h',
       '<(skia_src_path)/gpu/vk/GrVkBackendContext.cpp',
       '<(skia_src_path)/gpu/vk/GrVkBuffer.cpp',
       '<(skia_src_path)/gpu/vk/GrVkBuffer.h',
       '<(skia_src_path)/gpu/vk/GrVkCaps.cpp',
       '<(skia_src_path)/gpu/vk/GrVkCaps.h',
       '<(skia_src_path)/gpu/vk/GrVkCommandBuffer.cpp',
       '<(skia_src_path)/gpu/vk/GrVkCommandBuffer.h',
       '<(skia_src_path)/gpu/vk/GrVkDescriptorPool.cpp',
       '<(skia_src_path)/gpu/vk/GrVkDescriptorPool.h',
+      '<(skia_src_path)/gpu/vk/GrVkDescriptorSet.cpp',
+      '<(skia_src_path)/gpu/vk/GrVkDescriptorSet.h',
+      '<(skia_src_path)/gpu/vk/GrVkDescriptorSetManager.cpp',
+      '<(skia_src_path)/gpu/vk/GrVkDescriptorSetManager.h',
       '<(skia_src_path)/gpu/vk/GrVkExtensions.cpp',
       '<(skia_src_path)/gpu/vk/GrVkExtensions.h',
       '<(skia_src_path)/gpu/vk/GrVkFramebuffer.cpp',
       '<(skia_src_path)/gpu/vk/GrVkFramebuffer.h',
       '<(skia_src_path)/gpu/vk/GrVkGLSLSampler.h',
       '<(skia_src_path)/gpu/vk/GrVkGpu.cpp',
       '<(skia_src_path)/gpu/vk/GrVkGpu.h',
       '<(skia_src_path)/gpu/vk/GrVkGpuCommandBuffer.cpp',
       '<(skia_src_path)/gpu/vk/GrVkGpuCommandBuffer.h',
       '<(skia_src_path)/gpu/vk/GrVkImage.cpp',
@@ skipping 50 matching lines @@
       '<(skia_src_path)/gpu/gl/win/GrGLCreateNativeInterface_win.cpp',
       '<(skia_src_path)/gpu/gl/glx/GrGLCreateNativeInterface_glx.cpp',
       '<(skia_src_path)/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp',
       '<(skia_src_path)/gpu/gl/iOS/GrGLCreateNativeInterface_iOS.cpp',
       '<(skia_src_path)/gpu/gl/android/GrGLCreateNativeInterface_android.cpp',
     ],
     'skgpu_null_gl_sources': [
     ],
   },
 }