Use gn_helpers to [se]serialize GN lists.

build/config/android/rules.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/android/internal_rules.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/toolchain/toolchain.gni")
 
 assert(is_android)
@@ skipping 1177 matching lines @@
   #       "org/chromium/foo/FooInterface.java",
   #       "org/chromium/foo/FooService.java",
   #     ]
   #     deps = [
   #       ":bar_java"
   #     ]
   #     srcjar_deps = [
   #       ":foo_generated_enum"
   #     ]
   #     jar_excluded_patterns = [
-  #       "*/FooService.class", "*/FooService##*.class"
+  #       "*/FooService.class", "*/FooService\$*.class"
   #     ]
   #   }
   template("java_library") {
     set_sources_assignment_filter([])
     java_library_impl(target_name) {
       forward_variables_from(invoker, "*")
     }
   }
 
   # Declare a java library target for a prebuilt jar
@@ skipping 76 matching lines @@
   #       "android/org/chromium/foo/FooInterface.java",
   #       "android/org/chromium/foo/FooService.java",
   #     ]
   #     deps = [
   #       ":bar_java"
   #     ]
   #     srcjar_deps = [
   #       ":foo_generated_enum"
   #     ]
   #     jar_excluded_patterns = [
-  #       "*/FooService.class", "*/FooService##*.class"
+  #       "*/FooService.class", "*/FooService\$*.class"
   #     ]
   #   }
   template("android_library") {
     set_sources_assignment_filter([])
     assert(!defined(invoker.jar_path),
            "android_library does not support a custom jar path")
 
     if (defined(invoker.alternative_android_sdk_ijar)) {
       assert(defined(invoker.alternative_android_sdk_ijar_dep))
     }
 
     java_library_impl(target_name) {
       forward_variables_from(invoker, "*")
 
       supports_android = true
       requires_android = true
 
       if (!defined(jar_excluded_patterns)) {
         jar_excluded_patterns = []
       }
       jar_excluded_patterns += [
         "*/R.class",
-        "*/R##*.class",
+        "*/R\$*.class",
         "*/Manifest.class",
-        "*/Manifest##*.class",
+        "*/Manifest\$*.class",
       ]
     }
   }
 
   # Declare a target that packages a set of Java dependencies into a standalone
   # .dex.jar.
   #
   # Variables
   #   deps: specifies the dependencies of this target. Android libraries in deps
   #     will be packaged into the resulting .dex.jar file.
@@ skipping 1374 matching lines @@
         supports_android = true
         jar_path = "${_output_path}/$jar"
       }
     }
 
     java_group(target_name) {
       deps = _resource_targets + _jar_targets
     }
   }
 }