Add YUV_420_BIPLANAR to gfx::BufferFormat.

ui/gl/gl_image_ozone_native_pixmap.cc

Index: ui/gl/gl_image_ozone_native_pixmap.cc
diff --git a/ui/gl/gl_image_ozone_native_pixmap.cc b/ui/gl/gl_image_ozone_native_pixmap.cc
index 65f3982f0363e891249eb468dc22bd01dca6244c..84174e266b27a4b0ec296c36fabcf90a51cbe84c 100644
--- a/ui/gl/gl_image_ozone_native_pixmap.cc
+++ b/ui/gl/gl_image_ozone_native_pixmap.cc
@@ -38,6 +38,7 @@ bool ValidFormat(gfx::BufferFormat format) {
     case BufferFormat::RGBA_4444:
     case BufferFormat::RGBA_8888:
     case BufferFormat::YUV_420:
+    case BufferFormat::YUV_420_BIPLANAR:
       return false;
   }
 
@@ -60,6 +61,7 @@ EGLint FourCC(gfx::BufferFormat format) {
     case BufferFormat::RGBA_4444:
     case BufferFormat::RGBA_8888:
     case BufferFormat::YUV_420:
+    case BufferFormat::YUV_420_BIPLANAR:
       NOTREACHED();
       return 0;
   }