Add emacs and vim helper config files for gyp settings.

tools/emacs/chrome-filetypes.el

Index: tools/emacs/chrome-filetypes.el
diff --git a/tools/emacs/chrome-filetypes.el b/tools/emacs/chrome-filetypes.el
new file mode 100644
index 0000000000000000000000000000000000000000..14fc6bbaef38c34a30f4685e20260008df590adc
--- /dev/null
+++ b/tools/emacs/chrome-filetypes.el
@@ -0,0 +1,16 @@
+; To get syntax highlighting and tab settings for gyp(i) files, add the
+; following to init.el:
+;     (setq-default chrome-root "/path/to/chrome/src/")
+;     (add-to-list 'load-path (concat chrome-root "tools/emacs"))
+;     (require 'chrome-filetypes)
+
+(define-derived-mode gyp-mode python-mode "Gyp"
+  "Major mode for editing Generate Your Project files."
+    (setq indent-tabs-mode nil
+          tab-width 2
+          python-indent 2))
+
+(add-to-list 'auto-mode-alist '("\\.gyp$" . gyp-mode))
+(add-to-list 'auto-mode-alist '("\\.gypi$" . gyp-mode))
+
+(provide 'chrome-filetypes)