Provide StructTraits for a vector<SkBitmap>

skia/public/interfaces/BUILD.gn

Index: skia/public/interfaces/BUILD.gn
diff --git a/skia/public/interfaces/BUILD.gn b/skia/public/interfaces/BUILD.gn
index 8a19498a5dc4b182ac0680cafdc9b6fd16475b5c..3ad2ab6d8a2ac4a456f2fd0990f6873117ee6c17 100644
--- a/skia/public/interfaces/BUILD.gn
+++ b/skia/public/interfaces/BUILD.gn
@@ -11,6 +11,15 @@ mojom("interfaces") {
   ]
 }
 
+mojom("mojo") {
+  sources = [
+    "bitmap_array.mojom",
+  ]
+  public_deps = [
+    ":interfaces",
+  ]
+}
+
 mojom("test_interfaces") {
   testonly = true
   sources = [
@@ -19,5 +28,6 @@ mojom("test_interfaces") {
 
   public_deps = [
     ":interfaces",
+    ":mojo",
   ]
 }