GL_MAX_DRAW_BUFFERS_EXT  128 content/common/gpu/client/gl_helper.cc       gl_->GetIntegerv(GL_MAX_DRAW_BUFFERS_EXT, &max_draw_buffers_);
GL_MAX_DRAW_BUFFERS_EXT  582 gpu/GLES2/gl2extchromium.h #ifndef GL_MAX_DRAW_BUFFERS_EXT