Rename the Default* constants in java/config.

These values are used in two out of the many possible sdk_version
configurations, and therefore weren't really defaults in any
meaningful sense. Giving them more descriptive names makes the code
easier to follow.

Bug: 157640067
Test: m nothing
Change-Id: Icf38a9c0be2606ad0478929e1b40dfcee36cddef
diff --git a/java/config/config.go b/java/config/config.go
index bb5be3a..0351009 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -28,12 +28,11 @@
 var (
 	pctx = android.NewPackageContext("android/soong/java/config")
 
-	// TODO(b/157640067): Don't depend on the legacy API by default in the long term.
-	DefaultBootclasspathLibraries = []string{"legacy.core.platform.api.stubs", "core-lambda-stubs"}
-	DefaultSystemModules          = "legacy-core-platform-api-stubs-system-modules"
-	DefaultLibraries              = []string{"ext", "framework"}
-	DefaultLambdaStubsLibrary     = "core-lambda-stubs"
-	SdkLambdaStubsPath            = "prebuilts/sdk/tools/core-lambda-stubs.jar"
+	LegacyCorePlatformBootclasspathLibraries = []string{"legacy.core.platform.api.stubs", "core-lambda-stubs"}
+	LegacyCorePlatformSystemModules          = "legacy-core-platform-api-stubs-system-modules"
+	FrameworkLibraries                       = []string{"ext", "framework"}
+	DefaultLambdaStubsLibrary                = "core-lambda-stubs"
+	SdkLambdaStubsPath                       = "prebuilts/sdk/tools/core-lambda-stubs.jar"
 
 	DefaultJacocoExcludeFilter = []string{"org.junit.*", "org.jacoco.*", "org.mockito.*"}
 
diff --git a/java/config/makevars.go b/java/config/makevars.go
index 981a736..29f1f9b 100644
--- a/java/config/makevars.go
+++ b/java/config/makevars.go
@@ -25,9 +25,11 @@
 }
 
 func makeVarsProvider(ctx android.MakeVarsContext) {
-	ctx.Strict("TARGET_DEFAULT_JAVA_LIBRARIES", strings.Join(DefaultLibraries, " "))
-	ctx.Strict("TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES", strings.Join(DefaultBootclasspathLibraries, " "))
-	ctx.Strict("DEFAULT_SYSTEM_MODULES", DefaultSystemModules)
+	ctx.Strict("FRAMEWORK_LIBRARIES", strings.Join(FrameworkLibraries, " "))
+
+	// These are used by make when LOCAL_PRIVATE_PLATFORM_APIS is set (equivalent to platform_apis in blueprint):
+	ctx.Strict("LEGACY_CORE_PLATFORM_BOOTCLASSPATH_LIBRARIES", strings.Join(LegacyCorePlatformBootclasspathLibraries, " "))
+	ctx.Strict("LEGACY_CORE_PLATFORM_SYSTEM_MODULES", LegacyCorePlatformSystemModules)
 
 	ctx.Strict("ANDROID_JAVA_HOME", "${JavaHome}")
 	ctx.Strict("ANDROID_JAVA8_HOME", "prebuilts/jdk/jdk8/${hostPrebuiltTag}")