Support multiple contexts in command_buffer_gles2

gpu/gles2_conform_support/egl/display.cc

Index: gpu/gles2_conform_support/egl/display.cc
diff --git a/gpu/gles2_conform_support/egl/display.cc b/gpu/gles2_conform_support/egl/display.cc
index 2d2cffba519b010b86a40576ef36fe22d255e44c..fb4327254ce5e5461f18dd48ef6ff3d9557495c3 100644
--- a/gpu/gles2_conform_support/egl/display.cc
+++ b/gpu/gles2_conform_support/egl/display.cc
@@ -276,6 +276,7 @@ bool Display::MakeCurrent(EGLSurface draw, EGLSurface read, EGLContext ctx) {
     DCHECK(IsValidSurface(read));
     DCHECK(IsValidContext(ctx));
     gles2::SetGLContext(context_.get());
+    gl_context_->MakeCurrent(gl_surface_.get());
   }
   return true;
 }