Enable Java 8 by default

build/config/android/internal_rules.gni

Index: build/config/android/internal_rules.gni
diff --git a/build/config/android/internal_rules.gni b/build/config/android/internal_rules.gni
index d2d9f998b3d7d387b9a38ae1dd94f46d1b9c3461..7029647ed32e0c54bd7958ad3f9dcb81fe7d6c50 100644
--- a/build/config/android/internal_rules.gni
+++ b/build/config/android/internal_rules.gni
@@ -1052,8 +1052,7 @@ if (enable_java_templates) {
         defined(invoker.supports_android) && invoker.supports_android &&
         (is_java_debug || dcheck_always_on)
 
-    _retrolambda = defined(invoker.supports_android) &&
-                   invoker.supports_android && use_java8
+    _retrolambda = defined(invoker.supports_android) && invoker.supports_android
 
     _deps = []
     _previous_output_jar = _input_jar_path
@@ -2078,6 +2077,7 @@ if (enable_java_templates) {
         "--jar-path=$_rebased_jar_path",
         "--java-srcjars=$_rebased_java_srcjars",
         "--java-srcjars=@FileArg($_rebased_build_config:javac:srcjars)",
+        "--java-version=1.8",
       ]
       if (_enable_interface_jars_javac) {
         args += [ "--classpath=@FileArg($_rebased_build_config:javac:interface_classpath)" ]
@@ -2104,11 +2104,6 @@ if (enable_java_templates) {
             rebase_path(_android_sdk_ijar, root_build_dir)
         args += [ "--bootclasspath=$_rebased_android_sdk_ijar" ]
       }
-      if (use_java8) {
-        args += [ "--java-version=1.8" ]
-      } else if (_supports_android) {
-        args += [ "--java-version=1.7" ]
-      }
       foreach(e, _manifest_entries) {
         args += [ "--manifest-entry=" + e ]
       }