Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/7dff852..a049c43

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/d2ffc23..d768f57

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

Change-Id: I154d5143a0c02af6ff9f5ae639dadfd4583c7fc7
Reviewed-on: https://chromium-review.googlesource.com/621211Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47456}

DEPS

@@ -8,7 +8,7 @@ vars = {
 
 deps = {
   "v8/build":
-    Var("chromium_url") + "/chromium/src/build.git" + "@" + "7dff8529d084bea94bbf9f68569a0ffb4427eb65",
+    Var("chromium_url") + "/chromium/src/build.git" + "@" + "a049c43089b67a96c57b69dafc91a9a640b6bd70",
   "v8/tools/gyp":
     Var("chromium_url") + "/external/gyp.git" + "@" + "d61a9397e668fa9843c4aa7da9e79460fe590bfb",
   "v8/third_party/icu":
@@ -48,7 +48,7 @@ deps_os = {
     "v8/third_party/android_tools":
       Var("chromium_url") + "/android_tools.git" + "@" + "e9d4018e149d50172ed462a7c21137aa915940ec",
     "v8/third_party/catapult":
-      Var('chromium_url') + "/external/github.com/catapult-project/catapult.git" + "@" + "d2ffc23f1e05ee72a2fbb6afdd60db51351247e5",
+      Var('chromium_url') + "/external/github.com/catapult-project/catapult.git" + "@" + "d768f57acb8966c50c10edfe9050c1caa6a2003f",
   },
 }