Revert "Update V8 DEPS."

This reverts commit 5a5783e3.

Reason for revert: https://crbug.com/v8/6857

Original change's description:
> Update V8 DEPS.
> 
> Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/57716b3..e7d7f78
> 
> Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/9a255f5..852ba76
> 
> TBR=machenbach@chromium.org,hablich@chromium.org
> 
> Change-Id: I43c0f1d7286ca8ea959f2de4b78337cac9fe3f7d
> Reviewed-on: https://chromium-review.googlesource.com/683735
> Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
> Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48153}

TBR=v8-autoroll@chromium.org,machenbach@chromium.org,hablich@chromium.org

Bug: v8:6857
Change-Id: I52bc977eacce90247fcf25f1c641402daa940024
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/684214Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48155}

DEPS

@@ -8,7 +8,7 @@ vars = {
 
 deps = {
   "v8/build":
-    Var("chromium_url") + "/chromium/src/build.git" + "@" + "e7d7f7845a87885e02e316501e6b09f7793db672",
+    Var("chromium_url") + "/chromium/src/build.git" + "@" + "57716b379e9bbe0b7b6792046a3dd387001e1643",
   "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" + "@" + "aadb2fed04af8606545b0afe4e3060bc1a15fad7",
     "v8/third_party/catapult":
-      Var('chromium_url') + "/external/github.com/catapult-project/catapult.git" + "@" + "852ba7672ce02911e9f8f2a22363283adc80940e",
+      Var('chromium_url') + "/external/github.com/catapult-project/catapult.git" + "@" + "9a255f51046c55ea3c209acd64e36d8a5bd46fa4",
   },
 }