Expose CHROMIUM_texture_mailbox/sync_point stubs in mojo public headers

mojo/public/platform/native/gles2_thunks.h

Index: mojo/public/platform/native/gles2_thunks.h
diff --git a/mojo/public/platform/native/gles2_thunks.h b/mojo/public/platform/native/gles2_thunks.h
index 53375e20a3cffaa694ffdf012e5690654e848ee7..4718ab37528441f092ad8a341935aabe4c302303 100644
--- a/mojo/public/platform/native/gles2_thunks.h
+++ b/mojo/public/platform/native/gles2_thunks.h
@@ -59,44 +59,4 @@ inline MojoGLES2ControlThunks MojoMakeGLES2ControlThunks() {
 typedef size_t (*MojoSetGLES2ControlThunksFn)(
     const MojoGLES2ControlThunks* gles2_control_thunks);
 
-// -----------------------------------------------------------------------------
-
-// Like MojoGLES2ControlThunks, but specifies the frozen GLES2 API. Separated
-// out as MojoGLES2ControlThunks may be modified and added to, but this
-// interface is frozen.
-#pragma pack(push, 8)
-struct MojoGLES2ImplThunks {
-  size_t size;  // Should be set to sizeof(MojoGLES2ImplThunks).
-
-#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
-  ReturnType (*Function) PARAMETERS;
-#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
-#undef VISIT_GL_CALL
-};
-#pragma pack(pop)
-
-// Intended to be called from the embedder to get the embedder's implementation
-// of GLES2.
-inline MojoGLES2ImplThunks MojoMakeGLES2ImplThunks() {
-  MojoGLES2ImplThunks gles2_impl_thunks = {
-    sizeof(MojoGLES2ImplThunks),
-#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
-    gl##Function,
-#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
-#undef VISIT_GL_CALL
-  };
-
-  return gles2_impl_thunks;
-}
-
-// Use this type for the function found by dynamically discovering it in
-// a DSO linked with mojo_system. For example:
-// MojoSetGLES2ImplThunksFn mojo_set_gles2_impl_thunks_fn =
-//     reinterpret_cast<MojoSetGLES2ImplThunksFn>(
-//         app_library.GetFunctionPointer("MojoSetGLES2ImplThunks"));
-// The expected size of |gles2_impl_thunks| is returned.
-// The contents of |gles2_impl_thunks| are copied.
-typedef size_t (*MojoSetGLES2ImplThunksFn)(
-    const MojoGLES2ImplThunks* gles2_impl_thunks);
-
 #endif  // MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_