Enable Python auto-formatting on common directories

This enables the auto-formatter for directories that were found to have
a good number of python files in them.

Bug: 846432
Change-Id: I09d5d17aeba771e9ec060224abd26df035031832
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1988757
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#728972}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 4984c1cdf677d81c5e9af932898fd7b1edaff4b0

.style.yapf

@@ -0,0 +1,6 @@
+[style]
+based_on_style = pep8
+
+# New directories should use a .style.yapf that does not include the following:
+column_limit = 80
+indent_width = 2

android/.style.yapf

@@ -1,6 +0,0 @@
-[style]
-based_on_style = pep8
-column_limit = 80
-blank_line_before_nested_class_or_def = true
-blank_line_before_module_docstring = true
-indent_width = 2