Add support for lint baseline files

Test: m droid
Test: go test ^TestJavaLint # (from soong/build/java)

Change-Id: I249a0a0597b0bf8495460ed283b476ad2eb36edc
diff --git a/android/config.go b/android/config.go
index 50e39d7..d64790b 100644
--- a/android/config.go
+++ b/android/config.go
@@ -127,7 +127,7 @@
 
 	// If testAllowNonExistentPaths is true then PathForSource and PathForModuleSrc won't error
 	// in tests when a path doesn't exist.
-	testAllowNonExistentPaths bool
+	TestAllowNonExistentPaths bool
 
 	// The list of files that when changed, must invalidate soong_build to
 	// regenerate build.ninja.
@@ -254,7 +254,7 @@
 
 		// Set testAllowNonExistentPaths so that test contexts don't need to specify every path
 		// passed to PathForSource or PathForModuleSrc.
-		testAllowNonExistentPaths: true,
+		TestAllowNonExistentPaths: true,
 
 		BazelContext: noopBazelContext{},
 	}