Use _target_name instead of package_name for java*.gypi

base/base.gyp

Index: base/base.gyp
diff --git a/base/base.gyp b/base/base.gyp
index 14460d4eecbefb7e80e9426be1c7d95882fac889..8cc776ea8256e0e0e0a852f8f3e60fd2d24040fc 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -1023,7 +1023,6 @@
           'target_name': 'base_java',
           'type': 'none',
           'variables': {
-            'package_name': 'base',
             'java_in_dir': '../base/android/java',
           },
           'includes': [ '../build/java.gypi' ],
@@ -1035,7 +1034,6 @@
             'base_java',
           ],
           'variables': {
-            'package_name': 'base_javatests',
             'java_in_dir': '../base/test/android/javatests',
           },
           'includes': [ '../build/java.gypi' ],