Revert of Mojo bindings environment: remove usage in gles2.

mojo/gles2/gles2_context.cc

Index: mojo/gles2/gles2_context.cc
diff --git a/mojo/gles2/gles2_context.cc b/mojo/gles2/gles2_context.cc
index 90ba14e8c957a8d4d5edce7ca41098126a1d0f92..c9c5a81e701b5f69193c0e8686f9ab2c0d1fa6bd 100644
--- a/mojo/gles2/gles2_context.cc
+++ b/mojo/gles2/gles2_context.cc
@@ -25,10 +25,14 @@
 }
 
 GLES2Context::GLES2Context(const std::vector<int32_t>& attribs,
+                           const MojoAsyncWaiter* async_waiter,
                            mojo::ScopedMessagePipeHandle command_buffer_handle,
                            MojoGLES2ContextLost lost_callback,
                            void* closure)
-    : command_buffer_(this, attribs, std::move(command_buffer_handle)),
+    : command_buffer_(this,
+                      attribs,
+                      async_waiter,
+                      std::move(command_buffer_handle)),
       lost_callback_(lost_callback),
       closure_(closure) {}