WebRTC Unity Plugin Rebase

examples/unityplugin/unity_plugin_apis.h

Index: examples/unityplugin/unity_plugin_apis.h
diff --git a/examples/unityplugin/unity_plugin_apis.h b/examples/unityplugin/unity_plugin_apis.h
index 814b9675fb2e3fa75694a1aba026252312dd23e8..fb9ac30f667f7b1a128670d14b6fd034349b75bc 100644
--- a/examples/unityplugin/unity_plugin_apis.h
+++ b/examples/unityplugin/unity_plugin_apis.h
@@ -16,12 +16,18 @@
 #include <stdint.h>
 
 // Definitions of callback functions.
+// To support alpha channel, one needs to patch
+// https://codereview.chromium.org/2951033003/. We put it in general
+// interface in order to make this plugin work well with our Unity
+// Demo even without the Alpha Support.
 typedef void (*I420FRAMEREADY_CALLBACK)(const uint8_t* data_y,
                                         const uint8_t* data_u,
                                         const uint8_t* data_v,
+                                        const uint8_t* data_a,
                                         int stride_y,
                                         int stride_u,
                                         int stride_v,
+                                        int stride_a,
                                         uint32_t width,
                                         uint32_t height);
 typedef void (*LOCALDATACHANNELREADY_CALLBACK)();