Expose C++ configuration for Starlark cc_library

Exposes experimental_cc_implementation_deps and enable_legacy_cc_provider.

RELNOTES:none
PiperOrigin-RevId: 415010247

src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java

diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java
index fde7819..578f59e 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppConfiguration.java
@@ -766,6 +766,12 @@
     return cppOptions.targetLibcTopLabel;
   }
 
+  @StarlarkMethod(name = "enable_legacy_cc_provider", documented = false, useStarlarkThread = true)
+  public boolean enableLegacyCcProviderForStarlark(StarlarkThread thread) throws EvalException {
+    CcModule.checkPrivateStarlarkificationAllowlist(thread);
+    return enableLegacyCcProvider();
+  }
+
   public boolean enableLegacyCcProvider() {
     return !cppOptions.disableLegacyCcProvider;
   }
@@ -849,6 +855,16 @@
     return cppOptions.objcGenerateDotdFiles;
   }
 
+  @StarlarkMethod(
+      name = "experimental_cc_implementation_deps",
+      documented = false,
+      useStarlarkThread = true)
+  public boolean experimentalCcImplementationDepsForStarlark(StarlarkThread thread)
+      throws EvalException {
+    CcModule.checkPrivateStarlarkificationAllowlist(thread);
+    return experimentalCcImplementationDeps();
+  }
+
   public boolean experimentalCcImplementationDeps() {
     return cppOptions.experimentalCcImplementationDeps;
   }

src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java

diff --git a/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java b/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java
index 8dd0c8e..9b97f9d 100644
--- a/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java
+++ b/src/test/java/com/google/devtools/build/lib/rules/cpp/StarlarkCcCommonTest.java
@@ -6992,6 +6992,8 @@
             "incompatible_enable_cc_test_feature()",
             "build_test_dwp()",
             "grte_top()",
+            "enable_legacy_cc_provider()",
+            "experimental_cc_implementation_deps()",
             "share_native_deps()");
     scratch.file(
         "foo/BUILD",