Format all Python scripts

Some Python scripts weren't formatted - particularly scripts with just
the shebang and not the .py suffix. Run:

git ls-tree --full-tree --name-only -r HEAD | xargs grep -l '#!.*python' | xargs yapf -i chromium

to format them.

Change-Id: I68eae3e10496de558b184e9e16aaa1ba12b240e2
diff --git a/tools/gen_binary_descriptors b/tools/gen_binary_descriptors
index dbbf8c7..952e809 100755
--- a/tools/gen_binary_descriptors
+++ b/tools/gen_binary_descriptors
@@ -26,8 +26,7 @@
 
 SOURCE_TARGET = [
     ('protos/perfetto/trace_processor/trace_processor.proto',
-     'python/perfetto/trace_processor/trace_processor.descriptor'
-    ),
+     'python/perfetto/trace_processor/trace_processor.descriptor'),
     ('protos/perfetto/metrics/metrics.proto',
      'python/perfetto/trace_processor/metrics.descriptor'),
 ]