Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/b5eb49a..34746fc

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/5b642ef..978be74

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

Change-Id: Ifac38f68b8a735a54a596ed872f5e2fa2b5307e0
Reviewed-on: https://chromium-review.googlesource.com/1041407Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52932}

DEPS

@@ -12,7 +12,7 @@ vars = {
 
 deps = {
   'v8/build':
-    Var('chromium_url') + '/chromium/src/build.git' + '@' + 'b5eb49abd357ecc70219ab4751ce229d8c920e7d',
+    Var('chromium_url') + '/chromium/src/build.git' + '@' + '34746fc4e936e558912e14a1509bd88ff28af1e6',
   'v8/tools/gyp':
     Var('chromium_url') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
   'v8/third_party/icu':
@@ -32,7 +32,7 @@ deps = {
     'condition': 'checkout_android',
   },
   'v8/third_party/catapult': {
-    'url': Var('chromium_url') + '/catapult.git' + '@' + '5b642efe845940626042850327b511ee0c5042d2',
+    'url': Var('chromium_url') + '/catapult.git' + '@' + '978be7439d1e5219def7dae75b182b77db185f01',
     'condition': 'checkout_android',
   },
   'v8/third_party/colorama/src': {