Added the Vulkan Context Provider implementation.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index d36ad98996496a25dad5f3bda1ef0a0484c97caa..1f77258d8df738cac0a5efbef2df7b78dd3e1711 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -185,6 +185,10 @@
 #include "ui/views/mus/window_manager_connection.h"
 #endif
 
+#if defined(ENABLE_VULKAN)
+#include "gpu/vulkan/vulkan_implementation.h"
+#endif
+
 // One of the linux specific headers defines this as a macro.
 #ifdef DestroyAll
 #undef DestroyAll
@@ -1188,6 +1192,13 @@ int BrowserMainLoop::BrowserThreadsStarted() {
   base::PlatformThread::SetCurrentThreadPriority(base::ThreadPriority::DISPLAY);
 #endif
 
+#if defined(ENABLE_VULKAN)
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableVulkan)) {
+    gpu::InitializeVulkan();
+  }
+#endif
+
   bool always_uses_gpu = true;
   bool established_gpu_channel = false;
 #if defined(OS_ANDROID)