Add a few files that were missing from the build

Change-Id: I102758ecf16ecda1b28f331fc307e72bdb2b1eef
diff --git a/pw_bloat/examples/BUILD b/pw_bloat/examples/BUILD
new file mode 100644
index 0000000..5edf70b
--- /dev/null
+++ b/pw_bloat/examples/BUILD
@@ -0,0 +1,34 @@
+# Copyright 2019 The Pigweed Authors
+#
+# 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
+#
+#     https://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.
+
+load("//pw_build:pigweed.bzl", "pw_cc_binary")
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # Apache License 2.0
+
+pw_cc_binary(
+    name = "simple_base",
+    srcs = ["simple_base.cc"],
+)
+
+pw_cc_binary(
+    name = "simple_loop",
+    srcs = ["simple_loop.cc"],
+)
+
+pw_cc_binary(
+    name = "simple_function",
+    srcs = ["simple_function.cc"],
+)
diff --git a/pw_string/BUILD.gn b/pw_string/BUILD.gn
index 31481cc..b909d27 100644
--- a/pw_string/BUILD.gn
+++ b/pw_string/BUILD.gn
@@ -27,6 +27,7 @@
   ]
   public = [
     "public/pw_string/format.h",
+    "public/pw_string/string_builder.h",
     "public/pw_string/to_string.h",
     "public/pw_string/type_to_string.h",
     "public/pw_string/util.h",