osx_sdk: Add a default version for macOS 15

Bug: 40250422
Change-Id: I90a96592e74380d79382e93797a347814bb0b96c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/6165750
Reviewed-by: Gavin Mak <gavinmak@google.com>
Reviewed-by: Yue She <yueshe@google.com>
Commit-Queue: Leonard Grey <lgrey@chromium.org>

recipes/README.recipes.md

@@ -767,11 +767,11 @@ XCode installation.
 
 Available only to Google-run bots.
 
-#### **class [OSXSDKApi](/recipes/recipe_modules/osx_sdk/api.py#44)([RecipeApi][recipe_engine/wkt/RecipeApi]):**
+#### **class [OSXSDKApi](/recipes/recipe_modules/osx_sdk/api.py#45)([RecipeApi][recipe_engine/wkt/RecipeApi]):**
 
 API for using OS X SDK distributed via CIPD.
 
-&emsp; **@contextmanager**<br>&mdash; **def [\_\_call\_\_](/recipes/recipe_modules/osx_sdk/api.py#62)(self, kind):**
+&emsp; **@contextmanager**<br>&mdash; **def [\_\_call\_\_](/recipes/recipe_modules/osx_sdk/api.py#63)(self, kind):**
 
 Sets up the XCode SDK environment.
 
@@ -819,7 +819,7 @@ Args:
 Raises:
     StepFailure or InfraFailure.
 
-&mdash; **def [initialize](/recipes/recipe_modules/osx_sdk/api.py#55)(self):**
+&mdash; **def [initialize](/recipes/recipe_modules/osx_sdk/api.py#56)(self):**
 ### *recipe_modules* / [presubmit](/recipes/recipe_modules/presubmit)
 
 [DEPS](/recipes/recipe_modules/presubmit/__init__.py#13): [bot\_update](#recipe_modules-bot_update), [depot\_tools](#recipe_modules-depot_tools), [gclient](#recipe_modules-gclient), [git](#recipe_modules-git), [tryserver](#recipe_modules-tryserver), [recipe\_engine/buildbucket][recipe_engine/recipe_modules/buildbucket], [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/cv][recipe_engine/recipe_modules/cv], [recipe\_engine/json][recipe_engine/recipe_modules/json], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/properties][recipe_engine/recipe_modules/properties], [recipe\_engine/raw\_io][recipe_engine/recipe_modules/raw_io], [recipe\_engine/resultdb][recipe_engine/recipe_modules/resultdb], [recipe\_engine/step][recipe_engine/recipe_modules/step]

recipes/recipe_modules/osx_sdk/api.py

@@ -38,6 +38,7 @@ _DEFAULT_VERSION_MAP = [
     ('13.0', '14e300c'),
     ('13.5', '15c500b'),
     ('14.0', '15e204a'),
+    ('15.0', '16c5032a'),
 ]