Telemetry: add win support

The .vpython3 change is only necessary for running the opt in/out on
windows. Otherwise the only oddity was temporary files being weird
in windows.

Bug: 326277821
Change-Id: I88326410526d6fe7f6feb14a0bc27ab22eb12b58
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/6615021
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Struan Shrimpton <sshrimp@google.com>

infra_lib/telemetry/.vpython3

@@ -5,6 +5,11 @@
 
 python_version: "3.8"
 
+wheel: <
+  name: "infra/python/wheels/colorama-py2_py3"
+  version: "version:0.4.1"
+>
+
 wheel: <
   name: "infra/python/wheels/typing-extensions-py3"
   version: "version:4.0.1"

infra_lib/telemetry/__init__.py

@@ -68,8 +68,8 @@ def is_google_host() -> bool:
 def initialize(service_name,
                notice=DEFAULT_BANNER,
                cfg_file=config.DEFAULT_CONFIG_FILE):
-    # TODO(326277821): Add support for other platforms
-    if not sys.platform.startswith('linux'):
+    # TODO(326277821): Add support for mac
+    if sys.platform == 'darwin':
         return
 
     if not is_google_host():

infra_lib/telemetry/config.py

@@ -156,17 +156,19 @@ class Config:
         self._trace_config = TraceConfig(self._config)
         self._root_config = RootConfig(self._config)
 
+
     def flush(self) -> None:
         """Flushes the current config to config file."""
 
-        tmpfile = tempfile.NamedTemporaryFile()
-        with open(tmpfile.name, "w", encoding="utf-8") as configfile:
+        tmpDir = tempfile.mkdtemp()
+        tmpfile = Path.joinpath(Path(tmpDir), 'telemetry.cfg')
+        with open(tmpfile, "w", encoding="utf-8") as configfile:
             self._config.write(configfile)
 
         if not self._path.parent.exists():
             self._path.parent.mkdir(parents=True, exist_ok=True)
 
-        shutil.copy(tmpfile.name, self._path)
+        shutil.copy(tmpfile, self._path)
 
     @property
     def root_config(self) -> RootConfig: