Add a Mojo interface for SkBitmap and appropriate type converters.

skia/public/BUILD.gn

Index: skia/public/BUILD.gn
diff --git a/device/usb/public/cpp/BUILD.gn b/skia/public/BUILD.gn
similarity index 66%
copy from device/usb/public/cpp/BUILD.gn
copy to skia/public/BUILD.gn
index 43cea68e3dbdea9cc24eb578cc504673656f9242..ce407dfacf07933bb1bbf274d29a20e115be7b3d 100644
--- a/device/usb/public/cpp/BUILD.gn
+++ b/skia/public/BUILD.gn
@@ -2,15 +2,19 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("cpp") {
+source_set("public") {
   sources = [
-    "device_manager_delegate.h",
-    "device_manager_factory.h",
+    "type_converters.cc",
+    "type_converters.h",
   ]
 
   public_deps = [
+    "//skia/public/interfaces",
+  ]
+
+  deps = [
     "//base",
-    "//device/usb/public/interfaces",
+    "//skia",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
   ]
 }