Added initial Vulkan build files as well as a basic implementation file.

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 1bb3df07e35f42846c9f352ac69012eda1b1bc1c..369cd4dd947fdcd33afd16480a09c50ab1aae539 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -40,6 +40,10 @@
 #include "ui/ozone/public/ozone_platform.h"
 #endif
 
+#if defined(ENABLE_VULKAN)
+#include "gpu/vulkan/vulkan_surface.h"
+#endif
+
 namespace content {
 namespace {
 
@@ -200,6 +204,11 @@ GpuChildThread::GpuChildThread(
   gpu_info_.video_decode_accelerator_capabilities =
       content::GpuVideoDecodeAccelerator::GetCapabilities();
 
+#if defined(ENABLE_VULKAN)
+  // Temporary Vulkan initialization injection.
+  gpu::VulkanSurface::InitializeOneOff();
+#endif
+
   if (!gfx::GLSurface::InitializeOneOff())
     VLOG(1) << "gfx::GLSurface::InitializeOneOff failed";