Reduce classpath for class loader in CodegenTestCase

There's no point in adding JDK (mock or full) roots to it, as well as
stdlib/reflect/test (they are loaded by the parent class loader, created
in ForTestCompileRuntime)

plugins/plugins-tests/tests/org/jetbrains/kotlin/android/synthetic/test/AbstractAndroidBoxTest.kt

@@ -19,6 +19,7 @@ package org.jetbrains.kotlin.android.synthetic.test
 import com.intellij.openapi.util.io.FileUtil
 import com.intellij.util.ArrayUtil
 import com.intellij.util.Processor
+import org.jetbrains.kotlin.cli.jvm.config.jvmClasspathRoots
 import org.jetbrains.kotlin.codegen.AbstractBlackBoxCodegenTest
 import org.jetbrains.kotlin.codegen.CodegenTestFiles
 import org.jetbrains.kotlin.config.CompilerConfiguration
@@ -26,6 +27,7 @@ import org.jetbrains.kotlin.test.ConfigurationKind
 import org.jetbrains.kotlin.test.KotlinTestUtils
 import org.jetbrains.kotlin.test.TestJdkKind
 import java.io.File
+import java.net.URL
 import java.util.*
 import java.util.regex.Pattern
 
@@ -56,6 +58,10 @@ abstract class AbstractAndroidBoxTest : AbstractBlackBoxCodegenTest() {
         }
     }
 
+    override fun getClassPathURLs(): Array<URL> {
+        return myEnvironment.configuration.jvmClasspathRoots.map { it.toURI().toURL() }.toTypedArray()
+    }
+
     private fun getFakeFiles(path: String): Collection<String> {
         return FileUtil.findFilesByMask(Pattern.compile("^Fake.*\\.kt$"), File(path.replace(getTestName(true), ""))).map { relativePath(it) }
     }
@@ -102,4 +108,4 @@ abstract class AbstractAndroidBoxTest : AbstractBlackBoxCodegenTest() {
         )
         blackBox()
     }
-}
+}