Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/d8b353b..8e843a9

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/df668c3..1537dce

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

Change-Id: I7f9c08d17ba2fb7b03547eb01a7a875194c2b94d
Reviewed-on: https://chromium-review.googlesource.com/958202
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51860}

DEPS

@@ -13,7 +13,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + 'd8b353b7350a905e18e60c64380b8d1118b03c35',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '8e843a96fa31020bc97485f401977176324a3432',
   'v8/tools/gyp':
     Var('chromium_url') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
   'v8/third_party/icu':
@@ -33,7 +33,7 @@ deps = {
     'condition': 'checkout_android',
   },
   'v8/third_party/catapult': {
-    'url': Var('chromium_url') + '/catapult.git' + '@' + 'df668c31259de76109b670b659278bbe9f17e13d',
+    'url': Var('chromium_url') + '/catapult.git' + '@' + '1537dcedd27df5c4b962352e7c8d9dbbf9d26a42',
     'condition': 'checkout_android',
   },
   'v8/third_party/colorama/src': {