Add pw_string to bazel build.

Change-Id: I0aa7741959b741de082d44afe87786754b572951
diff --git a/BUILD b/BUILD
index 3c6b7b3..7279bbb 100644
--- a/BUILD
+++ b/BUILD
@@ -17,5 +17,6 @@
     "pw_preprocessor",
     "pw_span",
     "pw_status",
+    "pw_string",
     "pw_unit_test",
 ]
diff --git a/pw_build/pigweed.bzl b/pw_build/pigweed.bzl
index 154bd9c..0886b5c 100644
--- a/pw_build/pigweed.bzl
+++ b/pw_build/pigweed.bzl
@@ -47,6 +47,7 @@
         "pw_preprocessor/public",
         "pw_span/public",
         "pw_status/public",
+        "pw_string/public",
         "pw_unit_test/public",
     ]
     return ["-I" + x for x in includes]
diff --git a/pw_span/BUILD b/pw_span/BUILD
index ccb781d..690f03c 100644
--- a/pw_span/BUILD
+++ b/pw_span/BUILD
@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 
+package(default_visibility = ["//visibility:public"])
+
 load(
     "//pw_build:pigweed.bzl",
     "pw_default_copts",
diff --git a/pw_status/BUILD b/pw_status/BUILD
index 24f3b2e..31fa5de 100644
--- a/pw_status/BUILD
+++ b/pw_status/BUILD
@@ -19,7 +19,10 @@
 cc_library(
     name = "pw_status",
     srcs = ["status.cc"],
-    hdrs = ["public/pw_status/status.h"],
+    hdrs = [
+        "public/pw_status/status.h",
+        "public/pw_status/status_with_size.h",
+    ],
     copts = pw_default_copts(),
     linkopts = pw_default_linkopts(),
 )
diff --git a/pw_string/BUILD b/pw_string/BUILD
new file mode 100644
index 0000000..1f63d4c
--- /dev/null
+++ b/pw_string/BUILD
@@ -0,0 +1,43 @@
+# 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.
+
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "//pw_build:pigweed.bzl",
+    "pw_default_copts",
+    "pw_default_linkopts",
+    "pw_test",
+)
+
+cc_library(
+    name = "pw_string",
+    srcs = ["type_to_string.cc"],
+    hdrs = ["public/pw_string/type_to_string.h"],
+    copts = pw_default_copts(),
+    linkopts = pw_default_linkopts(),
+    deps = [
+        "//pw_preprocessor",
+        "//pw_span",
+        "//pw_status",
+    ],
+)
+
+pw_test(
+    name = "type_to_string_test",
+    srcs = ["type_to_string_test.cc"],
+    copts = pw_default_copts(),
+    linkopts = pw_default_linkopts(),
+    deps = ["//pw_string"],
+)