Expose CHROMIUM_texture_mailbox/sync_point stubs in mojo public headers

mojo/public/platform/native/gles2_thunks.cc

Index: mojo/public/platform/native/gles2_thunks.cc
diff --git a/mojo/public/platform/native/gles2_thunks.cc b/mojo/public/platform/native/gles2_thunks.cc
index 239aaf106af6abe381103b3e4c0ca94475976c9d..f73c5cbc016fbafebb1c36aaa54c6b1dd157f91f 100644
--- a/mojo/public/platform/native/gles2_thunks.cc
+++ b/mojo/public/platform/native/gles2_thunks.cc
@@ -11,7 +11,6 @@
 extern "C" {
 
 static MojoGLES2ControlThunks g_control_thunks = {0};
-static MojoGLES2ImplThunks g_impl_thunks = {0};
 
 void MojoGLES2Initialize(const MojoAsyncWaiter* async_waiter) {
   assert(g_control_thunks.GLES2Initialize);
@@ -56,14 +55,6 @@ void* MojoGLES2GetContextSupport(MojoGLES2Context context) {
   return g_control_thunks.GLES2GetContextSupport(context);
 }
 
-#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
-  ReturnType gl##Function PARAMETERS {                             \
-    assert(g_impl_thunks.Function);                                \
-    return g_impl_thunks.Function ARGUMENTS;                       \
-  }
-#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
-#undef VISIT_GL_CALL
-
 extern "C" THUNK_EXPORT size_t MojoSetGLES2ControlThunks(
     const MojoGLES2ControlThunks* gles2_control_thunks) {
   if (gles2_control_thunks->size >= sizeof(g_control_thunks))
@@ -71,11 +62,4 @@ extern "C" THUNK_EXPORT size_t MojoSetGLES2ControlThunks(
   return sizeof(g_control_thunks);
 }
 
-extern "C" THUNK_EXPORT size_t MojoSetGLES2ImplThunks(
-    const MojoGLES2ImplThunks* gles2_impl_thunks) {
-  if (gles2_impl_thunks->size >= sizeof(g_impl_thunks))
-    g_impl_thunks = *gles2_impl_thunks;
-  return sizeof(g_impl_thunks);
-}
-
 }  // extern "C"