Roll gyp r1972:1973

r1973: Changes the ninja generator to output phony targets for
uninteresting targets

BUG=410410
TEST=none
[email protected]

Review URL: https://codereview.chromium.org/546633002

Cr-Commit-Position: refs/heads/master@{#293423}
diff --git a/DEPS b/DEPS
index aee3aef..248aab00 100644
--- a/DEPS
+++ b/DEPS
@@ -157,7 +157,7 @@
     Var('chromium_git') + '/external/grit-i18n.git' + '@' + '77abf65c1d72af6fb7f9ef6f50cdf29fcf42d0a1', # from svn revision 175
 
   'src/tools/gyp':
-    Var('chromium_git') + '/external/gyp.git' + '@' + '6760f5b1a4852fd6ccbe4ffc409d73edac445744', # from svn revision 1972
+    Var('chromium_git') + '/external/gyp.git' + '@' + '1ff523f4eccd38fb9f73e60dddd895736ce90346', # from svn revision 1973
 
   'src/tools/swarming_client':
    Var('chromium_git') + '/external/swarming.client.git' + '@' +  Var('swarming_revision'),