GN(android): Distinguish java_binary from java_library in build_config

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("//base/android/linker/config.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/internal_rules.gni")
 import("//build/toolchain/toolchain.gni")
 import("//third_party/android_platform/config.gni")
 import("//tools/grit/grit_rule.gni")
@@ skipping 871 matching lines @@
 #
 # Example
 #   java_binary("foo") {
 #     java_files = [ "org/chromium/foo/FooMain.java" ]
 #     deps = [ ":bar_java" ]
 #     main_class = "org.chromium.foo.FooMain"
 #   }
 template("java_binary") {
   set_sources_assignment_filter([])
 
-  # TODO(cjhopman): This should not act like a java_library for dependents (i.e.
-  # dependents shouldn't get the jar in their classpath, etc.).
   java_library_impl(target_name) {
     forward_variables_from(invoker, "*")
     supports_android = false
     main_class = invoker.main_class
+    is_java_binary = true
   }
 }
 
 # Declare a Junit executable target
 #
 # This target creates an executable from java code for running as a junit test
 # suite. The executable will be in the output folder's /bin/ directory.
 #
 # Variables
 #   deps: Specifies the dependencies of this target. Java targets in this list
@@ skipping 1306 matching lines @@
   }
 
   android_library(target_name) {
     java_files = []
     srcjar_deps = [ ":${_template_name}__protoc_java" ]
     deps = [
       "//third_party/android_protobuf:protobuf_nano_javalib",
     ]
   }
 }