Moving catapult revision to the vars dictionary in DEPS.

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 79 matching lines @@
   'nacl_revision': 'd100b78dd34899d082bb9e6252def408d973f26b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling dEQP
   # and whatever else without interference from each other.
   'deqp_revision': 'cc0ded6c77267bbb14d21aac358fc5d9690c07f8',
   'deqp_url': 'https://android.googlesource.com/platform/external/deqp',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling freetype-android
   # and whatever else without interference from each other.
   'freetype_android_revision': 'a512b0fe7a8d9db0e5aa9c0a4db1e92cb861722d',
+  # Three lines of non-changing comments so that
+  # the commit queue can handle CLs rolling catapult
+  # and whatever else without interference from each other.
+  'catapult_revision': 'e1f22c94d067b622e50bb02d2981dee24e387671',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.
 # If you need to add a new host, contact chrome infrastracture team.
 allowed_hosts = [
   'chromium.googlesource.com',
   'boringssl.googlesource.com',
   'pdfium.googlesource.com',
   'android.googlesource.com',
 ]
@@ skipping 150 matching lines @@
    'https://boringssl.googlesource.com/boringssl.git' + '@' +  Var('boringssl_revision'),
 
   'src/third_party/py_trace_event/src':
     Var('chromium_git') + '/external/py_trace_event.git' + '@' + 'dd463ea9e2c430de2b9e53dea57a77b4c3ac9b30',
 
   'src/third_party/dom_distiller_js/dist':
     Var('chromium_git') + '/external/github.com/chromium/dom-distiller-dist.git' + '@' + 'e21fe06cb71327ec62431f823e783d7b02f97b26',
 
   'src/third_party/catapult':
     Var('chromium_git') + '/external/github.com/catapult-project/catapult.git' + '@' +
-    'e1f22c94d067b622e50bb02d2981dee24e387671',
+    Var('catapult_revision'),
 
   'src/third_party/openh264/src':
     Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + 'b37cda248234162033e3e11b0335f3131cdfe488',
 
   'src/third_party/re2/src':
     Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + 'dba3349aba83b5588e85e5ecf2b56c97f2d259b7',
 }
 
 
 deps_os = {
@@ skipping 554 matching lines @@
     'pattern': '\\.sha1',
     'action': ['python', 'src/third_party/instrumented_libraries/scripts/download_binaries.py'],
   },
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     'name': 'gyp',
     'pattern': '.',
     'action': ['python', 'src/build/gyp_chromium'],
   },
 ]