Add support for OutputSurface for Vulkan on Android.

content/browser/renderer_host/compositor_impl_android.h

Index: content/browser/renderer_host/compositor_impl_android.h
diff --git a/content/browser/renderer_host/compositor_impl_android.h b/content/browser/renderer_host/compositor_impl_android.h
index 62ab1d8c10b8dcd84557aaf5109ed9b1b8099131..1aedbc4036c5ec34c42028cf9ee7268a52bf73b9 100644
--- a/content/browser/renderer_host/compositor_impl_android.h
+++ b/content/browser/renderer_host/compositor_impl_android.h
@@ -36,6 +36,7 @@ class LayerTreeHost;
 class OnscreenDisplayClient;
 class SurfaceIdAllocator;
 class SurfaceManager;
+class VulkanInProcessContextProvider;
 }
 
 namespace content {
@@ -65,6 +66,9 @@ class CONTENT_EXPORT CompositorImpl
   static cc::SurfaceManager* GetSurfaceManager();
   static std::unique_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator();
 
+  static scoped_refptr<cc::VulkanInProcessContextProvider>
+  SharedVulkanContextProviderAndroid();
+
   void PopulateGpuCapabilities(gpu::Capabilities gpu_capabilities);
 
   void AddObserver(VSyncObserver* observer);