Mojo multiple command buffer support and sample

mojo/services/public/interfaces/gpu/BUILD.gn

Index: mojo/services/public/interfaces/gpu/BUILD.gn
diff --git a/mojo/services/public/interfaces/input_events/BUILD.gn b/mojo/services/public/interfaces/gpu/BUILD.gn
similarity index 70%
copy from mojo/services/public/interfaces/input_events/BUILD.gn
copy to mojo/services/public/interfaces/gpu/BUILD.gn
index ac1c94c1de764d645bc43b34dd8a69cff7ec7259..feb4b18ae31ffc5b5a65d1e9ca2a0791509d3fc0 100644
--- a/mojo/services/public/interfaces/input_events/BUILD.gn
+++ b/mojo/services/public/interfaces/gpu/BUILD.gn
@@ -4,13 +4,14 @@
 
 import("//mojo/public/tools/bindings/mojom.gni")
 
-# GYP version: mojo/mojo_services.gypi:mojo_input_events_bindings
-mojom("input_events") {
+# GYP version: mojo/mojo_services.gypi:mojo_gpu_bindings
+mojom("gpu") {
   sources = [
-    "input_events.mojom",
+    "gpu.mojom",
   ]
 
   deps = [
+    "//mojo/services/gles2:bindings",
     "//mojo/services/public/interfaces/geometry",
   ]
 }