[Shadows] Add shadow vertex generation code and shaders [8/n]

Bug: 136561771
Test: go/wm-smoke

Change-Id: I13e627a707d6d7a10bbd0ea6cc26bcb5c5bc9ab8
diff --git a/libs/renderengine/Android.bp b/libs/renderengine/Android.bp
index 136ad0d..348377e 100644
--- a/libs/renderengine/Android.bp
+++ b/libs/renderengine/Android.bp
@@ -52,6 +52,8 @@
         "gl/GLExtensions.cpp",
         "gl/GLFramebuffer.cpp",
         "gl/GLImage.cpp",
+        "gl/GLShadowVertexGenerator.cpp",
+        "gl/GLSkiaShadowPort.cpp",
         "gl/ImageManager.cpp",
         "gl/Program.cpp",
         "gl/ProgramCache.cpp",