Merge pull request #10423 from ctiller/minimal

BUILD

CMakeLists.txt

Makefile

binding.gyp

build.yaml

config.m4

gRPC-Core.podspec

grpc.gemspec

include/grpc/impl/codegen/grpc_types.h

package.xml

src/core/ext/census/gen/trace_context.pb.h

src/core/ext/census/grpc_plugin.c

src/core/ext/census/trace_label.h

src/core/ext/census/trace_propagation.h

src/core/ext/census/trace_status.h

src/core/ext/census/trace_string.h

src/core/ext/census/tracing.h

src/core/ext/filters/client_channel/README.md

src/core/ext/filters/client_channel/channel_connectivity.c

src/core/ext/filters/client_channel/client_channel.c