Roll gyp 1948:1950

1950: Edited wiki page GypHacking through web user interface.
1949: Fixes two bugs in analyzer

BUG=383609
TEST=none

Review URL: https://codereview.chromium.org/385283002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282763 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -160,7 +160,7 @@ deps = {
     (Var("googlecode_url") % "grit-i18n") + "/trunk@170",
 
   "src/tools/gyp":
-    (Var("googlecode_url") % "gyp") + "/trunk@1948",
+    (Var("googlecode_url") % "gyp") + "/trunk@1950",
 
   "src/tools/swarming_client":
     Var("chromium_git") + "/external/swarming.client.git@" +