Pull buildtools repo.

This pulls the new buildtools repo which will contain sha1 references to binaries we pull from google storage. This is so related Chromium projects can shared the same binaries without individually managing versions.

Review URL: https://codereview.chromium.org/281863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@270292 0039d316-1c4b-4281-b951-d872f2087c98

.gitignore

@@ -56,6 +56,7 @@ v8.log
 /build/util/support
 /build/x64/
 /build/linux/bin/eu-strip
+/buildtools
 # The Chrome OS build creates a /c symlink due to http://crbug.com/54866.
 /c
 /ceee/internal/

DEPS

@@ -5,11 +5,14 @@
 #
 # To test manually, run:
 #   python tools/deps2git/deps2git.py -o .DEPS.git -w <gclientdir>
-#   gclient runhooks
 # where <gcliendir> is the absolute path to the directory containing the
 # .gclient file (the parent of "src").
-# DO NOT CHECK IN CHANGES TO .DEPS.git. It will be automatically updated by
-# a bot when you modify this one.
+#
+# Then commit .DEPS.git locally (gclient doesn't like dirty trees) and run
+#   gclient sync
+# Verify the thing happened you wanted. Then revert your .DEPS.git change
+# DO NOT CHECK IN CHANGES TO .DEPS.git upstream. It will be automatically
+# updated by a bot when you modify this one.
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
@@ -72,12 +75,20 @@ vars = {
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
   "angle_revision": "6f182c12db67a4958fa5103e7602f13bca3ad9b6",
+  # Three lines of non-changing comments so that
+  # the commit queue can handle CLs rolling build tools
+  # and whatever else without interference from each other.
+  "buildtools_revision": "8349035e86305fc9e4fd871610821336120a4bad",
 }
 
 deps = {
   "src/breakpad/src":
     (Var("googlecode_url") % "google-breakpad") + "/trunk/src@1325",
 
+  "src/buildtools":
+    Var("chromium_git") + "/chromium/buildtools.git@" +
+     Var("buildtools_revision"),
+
   "src/sdch/open-vcdiff":
     (Var("googlecode_url") % "open-vcdiff") + "/trunk@42",