Remove the gyp_chromium hook from DEPS.

Also, add a watchlist entry for modifications to gyp files.

R=brettw@chromium.org
BUG=432967

Review-Url: https://codereview.chromium.org/2194043004
Cr-Commit-Position: refs/heads/master@{#408893}

DEPS

@@ -973,12 +973,6 @@ hooks = [
                'src/build/android/download_doclava.py',
     ],
   },
-  {
-    # A change to a .gyp, .gypi, or to GYP itself should run the generator.
-    'name': 'gyp',
-    'pattern': '.',
-    'action': ['python', 'src/build/gyp_chromium', '--running-as-hook'],
-  },
 ]
 
 # ANGLE manages DEPS that it also owns the build files for, such as dEQP.

WATCHLISTS

@@ -444,6 +444,9 @@
     'gpu': {
       'filepath': 'gpu/',
     },
+    'gyp': {
+      'filepath': '.gyp$|.gypi$',
+    },
     'history_ui': {
       'filepath': 'chrome/browser/resources/(md_)?history|'\
                   'chrome/browser/ui/webui/.*history',
@@ -1735,6 +1738,7 @@
     'gn': ['dpranke@chromium.org',
            'tfarina@chromium.org'],
     'gpu': ['piman+watch@chromium.org'],
+    'gyp': ['dpranke@chromium.org'],
     'history_ui': ['dbeam+watch-history@chromium.org',
                    'dubroy@chromium.org',
                    'pam+watch@chromium.org'],