Add cc_library_headers support to bp2build.

Test: Added cc_conversion_test.go.
Change-Id: Id4459d2c2fa02687a374cd9fb25d687e9678218c
diff --git a/bp2build/Android.bp b/bp2build/Android.bp
index fdac88d..5321d2a 100644
--- a/bp2build/Android.bp
+++ b/bp2build/Android.bp
@@ -15,12 +15,14 @@
     deps: [
         "soong-android",
         "soong-bazel",
+        "soong-cc",
         "soong-genrule",
         "soong-sh",
     ],
     testSrcs: [
         "build_conversion_test.go",
         "bzl_conversion_test.go",
+        "cc_conversion_test.go",
         "conversion_test.go",
         "testing.go",
     ],