[Android] Change jni_gen_dir to jni_gen_package for jni_generator.

build/jar_file_jni_generator.gypi

Index: build/jar_file_jni_generator.gypi
diff --git a/build/jar_file_jni_generator.gypi b/build/jar_file_jni_generator.gypi
index 2f03b859c625bf4beb2ce8a227fd08a9b112ed5d..3a2447ec3cd323852d5a9706fa91dd84b3986308 100644
--- a/build/jar_file_jni_generator.gypi
+++ b/build/jar_file_jni_generator.gypi
@@ -10,7 +10,7 @@
 #   'target_name': 'android_jar_jni_headers',
 #   'type': 'none',
 #   'variables': {
-#     'jni_gen_dir': 'chrome',
+#     'jni_gen_package': 'chrome',
 #     'input_java_class': 'java/io/InputStream.class',
 #     'input_jar_file': '<(android_sdk)/android.jar',
 #   },
@@ -32,7 +32,7 @@
         'java_class_name': '<!(basename <(input_java_class)|sed "s/\.class//")'
       },
       'outputs': [
-        '<(SHARED_INTERMEDIATE_DIR)/<(jni_gen_dir)/jni/<(java_class_name)_jni.h',
+        '<(SHARED_INTERMEDIATE_DIR)/<(jni_gen_package)/jni/<(java_class_name)_jni.h',
       ],
       'action': [
         '<(jni_generator)',
@@ -41,7 +41,7 @@
         '--input_file',
         '<(input_java_class)',
         '--output_dir',
-        '<(SHARED_INTERMEDIATE_DIR)/<(jni_gen_dir)/jni',
+        '<(SHARED_INTERMEDIATE_DIR)/<(jni_gen_package)/jni',
         '--optimize_generation',
         '<(optimize_jni_generation)',
       ],