add stubs for PPB_OpenGLES2ChromiumMapSub
add stubs for PPB_OpenGLES2ChromiumMapSub

Papapashu/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,reuben/freshplayerplugin,Papapashu/freshplayerplugin,Papapashu/freshplayerplugin,reuben/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,reuben/freshplayerplugin