Scaffolding for Android implementation of PaymentRequest.

third_party/WebKit/public/blink.gyp

Index: third_party/WebKit/public/blink.gyp
diff --git a/third_party/WebKit/public/blink.gyp b/third_party/WebKit/public/blink.gyp
index 8a430d7fac7950dbb2b9764ef830faf907190aaf..72494d297e0dc71de611da6b074c1ed1b3384790 100644
--- a/third_party/WebKit/public/blink.gyp
+++ b/third_party/WebKit/public/blink.gyp
@@ -36,10 +36,12 @@
             'platform/modules/bluetooth/web_bluetooth.mojom',
             'platform/modules/geolocation/geolocation.mojom',
             'platform/modules/notifications/notification.mojom',
-            'platform/modules/payments/payment_request.mojom',
             'platform/modules/permissions/permission.mojom',
             'platform/modules/permissions/permission_status.mojom',
         ],
+        'blink_android_mojo_sources': [
+            'platform/modules/payments/payment_request.mojom',
+        ],
     },
     'targets': [
         {
@@ -98,7 +100,10 @@
             'target_name': 'mojo_bindings_blink_mojom',
             'type': 'none',
             'variables': {
-                'mojom_files': ['<@(blink_mojo_sources)'],
+                'mojom_files': [
+                    '<@(blink_mojo_sources)',
+                    '<@(blink_android_mojo_sources)',
+                ],
                 'mojom_variant': 'wtf',
                 'for_blink': 'true',
             },
@@ -127,4 +132,29 @@
             ],
         },
     ],
+    'conditions': [
+        ['OS == "android"', {
+            'targets': [
+                {
+                    'target_name': 'android_mojo_bindings_mojom',
+                    'type': 'none',
+                    'variables': {
+                        'mojom_files': ['<@(blink_android_mojo_sources)'],
+                    },
+                    'includes': [
+                        '../../../mojo/mojom_bindings_generator_explicit.gypi',
+                    ],
+                },
+                {
+                    # GN version: //third_party/WebKit/public:android_mojo_bindings_java
+                    'target_name': 'android_mojo_bindings_java',
+                    'type': 'static_library',
+                    'dependencies': [
+                        'android_mojo_bindings_mojom',
+                        '../../../mojo/mojo_public.gyp:mojo_bindings_java',
+                    ],
+                },
+            ],
+        }],
+    ],
 }