Merge Webkit at r58956: Update V8_MERGE_REVISION

Change-Id: Idb61bad32dcc749608f18be9da7f1437452a099e
diff --git a/V8_MERGE_REVISION b/V8_MERGE_REVISION
index 94f2ae6..dad0165 100644
--- a/V8_MERGE_REVISION
+++ b/V8_MERGE_REVISION
@@ -1,7 +1,4 @@
 We use a V8 revision that has been used for a Chromium release.
 
-We're using WebKit r58033, as used by
-http://src.chromium.org/svn/releases/5.0.387.0/DEPS
-This requires http://v8.googlecode.com/svn/trunk@4465 but this version has a
-crashing bug for ARM. Instead we use http://v8.googlecode.com/svn/trunk@4588,
-which is used by http://src.chromium.org/svn/releases/6.0.399.0/DEPS
+http://src.chromium.org/svn/releases/6.0.399.0/DEPS
+http://v8.googlecode.com/svn/trunk@4588