[grpc] Support latest version of grpc PoC (#6338)

* use grpcpp rather than deprecated grpc++

* grpcpp Deserialize take ByteBuffer instead of grpc_byte_buffer

* grpc 1.36.0

* Fix to use grpc 1.36.0

* Fix CMakeLists to refer gRPC

* add find_package(Threads)

* Update bazel deps

* Apply workaround about boringssl build error

* Install latest cmake for osx on travis-ci

Co-authored-by: Yeom Gyusun <omniavinco@gmail.com>

WORKSPACE

@@ -18,14 +18,10 @@ go_rules_dependencies()
 go_register_toolchains()
 
 ##### Protobuf
-_PROTOBUF_VERSION = "3.6.1"
+_PROTOBUF_VERSION = "3.15.2"
 
 http_archive(
     name = "com_google_protobuf",
-    patch_args = ["-p1"],
-    patches = [
-        "//bazel:protobuf_deps_3_6_1.patch",
-    ],
     strip_prefix = "protobuf-" + _PROTOBUF_VERSION,
     urls = [
         "https://github.com/protocolbuffers/protobuf/archive/v" + _PROTOBUF_VERSION + ".tar.gz",
@@ -33,15 +29,10 @@ http_archive(
 )
 
 ##### GRPC
-_GRPC_VERSION = "1.15.1"
+_GRPC_VERSION = "1.36.1"
 
 http_archive(
     name = "com_github_grpc_grpc",
-    patch_args = ["-p1"],
-    patches = [
-        "//bazel:grpc_deps_1_15_1.patch",
-        "//bazel:grpc_deps_1_15_1_02.patch",
-    ],
     strip_prefix = "grpc-" + _GRPC_VERSION,
     urls = ["https://github.com/grpc/grpc/archive/v" + _GRPC_VERSION + ".tar.gz"],
 )
@@ -49,3 +40,7 @@ http_archive(
 load("@com_github_grpc_grpc//bazel:grpc_deps.bzl", "grpc_deps")
 
 grpc_deps()
+
+load("@com_github_grpc_grpc//bazel:grpc_extra_deps.bzl", "grpc_extra_deps")
+
+grpc_extra_deps()