Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/6f5ee86..181a988

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/ddcfa34..9e8a0b2

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: I396cf06b2c5a27acb9136da5c17bce3df616b860
Reviewed-on: https://chromium-review.googlesource.com/1146157Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#54602}

DEPS

@@ -13,7 +13,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + '6f5ee8660ad7bb0ddc3e4c8001a6ead825462417',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '181a98820c4e0ebf8cf38af6561a68a9e33956b0',
   'v8/tools/gyp':
     Var('chromium_url') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
   'v8/third_party/depot_tools':
@@ -35,7 +35,7 @@ deps = {
     'condition': 'checkout_android',
   },
   'v8/third_party/catapult': {
-    'url': Var('chromium_url') + '/catapult.git' + '@' + 'ddcfa34d6ad43fceb291a000fa013ad159dc731e',
+    'url': Var('chromium_url') + '/catapult.git' + '@' + '9e8a0b2b37d966544401445b117d192e1ec7f114',
     'condition': 'checkout_android',
   },
   'v8/third_party/colorama/src': {