Add 'third_party/cpp/googleapis/' from commit 'c873fd3aa1'

git-subtree-dir: third_party/cpp/googleapis
git-subtree-mainline: 438050b3d9
git-subtree-split: c873fd3aa1

third_party/cpp/googleapis/ci/kokoro/install/Dockerfile.ubuntu-16.04

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+# Copyright 2018 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM ubuntu:16.04 AS devtools
+
+# Please keep the formatting in these commands, it is optimized to cut & paste
+# into the README.md file.
+
+## [START INSTALL.md]
+
+# Install the minimal development tools:
+
+# ```bash
+RUN apt update && \
+    apt install -y automake build-essential cmake git gcc g++ cmake \
+        libcurl4-openssl-dev libssl-dev libtool make pkg-config tar wget \
+        zlib1g-dev
+# ```
+
+# #### c-ares
+
+# Recent versions of gRPC require c-ares >= 1.11, while Ubuntu-16.04
+# distributes c-ares-1.10. We can manually install a newer version
+# of c-ares:
+
+# ```bash
+WORKDIR /var/tmp/build
+RUN wget -q https://github.com/c-ares/c-ares/archive/cares-1_15_0.tar.gz
+RUN tar -xf cares-1_15_0.tar.gz
+WORKDIR /var/tmp/build/c-ares-cares-1_15_0
+RUN ./buildconf && ./configure && make -j $(nproc)
+RUN make install
+RUN ldconfig
+# ```
+
+# #### Protobuf
+
+# While protobuf-3.0 is distributed with Ubuntu, the Google Cloud Plaform proto
+# files require more recent versions (circa 3.4.x). To manually install a more
+# recent version use:
+
+# ```bash
+WORKDIR /var/tmp/build
+RUN wget -q https://github.com/google/protobuf/archive/v3.9.0.tar.gz
+RUN tar -xf v3.9.0.tar.gz
+WORKDIR /var/tmp/build/protobuf-3.9.0/cmake
+RUN cmake \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DBUILD_SHARED_LIBS=yes \
+        -Dprotobuf_BUILD_TESTS=OFF \
+        -H. -Bcmake-out
+RUN cmake --build cmake-out --target install -- -j $(nproc)
+RUN ldconfig
+# ```
+
+# #### gRPC
+
+# Likewise, Ubuntu has packages for grpc-1.3.x, but this version is too old for
+# the Google Cloud Platform APIs:
+
+# ```bash
+WORKDIR /var/tmp/build
+RUN wget -q https://github.com/grpc/grpc/archive/v1.22.0.tar.gz
+RUN tar -xf v1.22.0.tar.gz
+WORKDIR /var/tmp/build/grpc-1.22.0
+RUN make -j $(nproc)
+RUN make install
+RUN ldconfig
+# ```
+
+FROM devtools AS install
+
+# #### googleapis
+
+# Finally we can install `googleapis`.
+
+# ```bash
+WORKDIR /home/build/cpp-cmakefiles
+COPY . /home/build/cpp-cmakefiles
+RUN cmake -H. -Bcmake-out
+RUN cmake --build cmake-out -- -j $(nproc)
+WORKDIR /home/build/cpp-cmakefiles/cmake-out
+RUN cmake --build . --target install
+# ```
+
+## [END INSTALL.md]
+
+# Verify that the installed files are actually usable
+RUN /home/build/cpp-cmakefiles/ci/test-install/compile-test-projects.sh