Use _target_name instead of package_name for java*.gypi

android_webview/android_webview.gyp

Index: android_webview/android_webview.gyp
diff --git a/android_webview/android_webview.gyp b/android_webview/android_webview.gyp
index 4a6cc4a5bd22c76b21008574c206868d4e589519..7bf4fd65543f5b3987cb2844dfd3f31618a04c1a 100644
--- a/android_webview/android_webview.gyp
+++ b/android_webview/android_webview.gyp
@@ -96,7 +96,6 @@
         '../ui/ui.gyp:ui_java',
       ],
       'variables': {
-        'package_name': 'android_webview_java',
         'java_in_dir': '../android_webview/java',
       },
       'includes': [ '../build/java.gypi' ],
@@ -117,7 +116,6 @@
         'libwebviewchromium',
       ],
       'variables': {
-        'package_name': 'android_webview',
         'apk_name': 'AndroidWebView',
         'manifest_package_name': 'org.chromium.android_webview',
         'java_in_dir': '../android_webview/java',
@@ -161,7 +159,6 @@
         'libwebviewchromium',
       ],
       'variables': {
-        'package_name': 'android_webview_test',
         'apk_name': 'AndroidWebViewTest',
         'java_in_dir': '../android_webview/javatests',
         'resource_dir': 'res',