Revert "Block CFI on static libraries"

This reverts commit f9abec0987feb81132201179217ad0ea66ae4074.

Reason for revert:
https://b.corp.google.com/issues/301444094
https://b.corp.google.com/issues/301443813
https://b.corp.google.com/issues/301437374

Change-Id: I6fd03e4d3c0930005178ad347f53156be8f15efc
diff --git a/bp2build/cc_library_static_conversion_test.go b/bp2build/cc_library_static_conversion_test.go
index e7a75b4..89ec8f9 100644
--- a/bp2build/cc_library_static_conversion_test.go
+++ b/bp2build/cc_library_static_conversion_test.go
@@ -2135,9 +2135,9 @@
 	})
 }
 
-func TestCcLibraryStaticNoCfi(t *testing.T) {
+func TestCcLibraryStaticWithCfi(t *testing.T) {
 	runCcLibraryStaticTestCase(t, Bp2buildTestCase{
-		Description: "cc_library_static never explicitly enables CFI",
+		Description: "cc_library_static has correct features when cfi is enabled",
 		Blueprint: `
 cc_library_static {
 	name: "foo",
@@ -2147,6 +2147,7 @@
 }`,
 		ExpectedBazelTargets: []string{
 			MakeBazelTarget("cc_library_static", "foo", AttrNameToString{
+				"features":       `["android_cfi"]`,
 				"local_includes": `["."]`,
 			}),
 		},
@@ -2155,7 +2156,7 @@
 
 func TestCcLibraryStaticWithCfiOsSpecific(t *testing.T) {
 	runCcLibraryStaticTestCase(t, Bp2buildTestCase{
-		Description: "cc_library_static never explicitly enables CFI even for specific variants",
+		Description: "cc_library_static has correct features when cfi is enabled for specific variants",
 		Blueprint: `
 cc_library_static {
 	name: "foo",
@@ -2169,6 +2170,10 @@
 }`,
 		ExpectedBazelTargets: []string{
 			MakeBazelTarget("cc_library_static", "foo", AttrNameToString{
+				"features": `select({
+        "//build/bazel/platforms/os:android": ["android_cfi"],
+        "//conditions:default": [],
+    })`,
 				"local_includes": `["."]`,
 			}),
 		},
@@ -2177,7 +2182,7 @@
 
 func TestCcLibraryStaticWithCfiAndCfiAssemblySupport(t *testing.T) {
 	runCcLibraryStaticTestCase(t, Bp2buildTestCase{
-		Description: "cc_library_static will specify cfi_assembly_support feature but not cfi feature",
+		Description: "cc_library_static has correct features when cfi is enabled with cfi_assembly_support",
 		Blueprint: `
 cc_library_static {
 	name: "foo",
@@ -2190,7 +2195,10 @@
 }`,
 		ExpectedBazelTargets: []string{
 			MakeBazelTarget("cc_library_static", "foo", AttrNameToString{
-				"features":       `["android_cfi_assembly_support"]`,
+				"features": `[
+        "android_cfi",
+        "android_cfi_assembly_support",
+    ]`,
 				"local_includes": `["."]`,
 			}),
 		},