Incrementing VERSION to 50.0.2646.1

Cr-Commit-Position: refs/branch-heads/2646@{#1}
Cr-Branched-From: 6137b72d44c0391a39e2a8f9cad9efb4706880e9-refs/heads/master@{#374556}
diff --git a/chrome/VERSION b/chrome/VERSION
index 458cd22..9b812ce 100644
--- a/chrome/VERSION
+++ b/chrome/VERSION
@@ -1,4 +1,4 @@
 MAJOR=50
 MINOR=0
 BUILD=2646
-PATCH=0
+PATCH=1