Style-option file for clang-format.

Specifies that clang-format as well as related editor plugins should use
Chromium style.

BUG=
TEST=formatting code with vim, running :ClangFormat before/after this change.
R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/4339004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5172 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..0a89601
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,3 @@
+# Defines the Chromium style for automatic reformatting.
+# http://clang.llvm.org/docs/ClangFormatStyleOptions.html
+BasedOnStyle: Chromium