Incrementing VERSION to 47.0.2526.28

Cr-Commit-Position: refs/branch-heads/2526@{#202}
Cr-Branched-From: cb947c0153db0ec02a8abbcb3ca086d88bf6006f-refs/heads/master@{#352221}
diff --git a/chrome/VERSION b/chrome/VERSION
index 7e37016..2d70721 100644
--- a/chrome/VERSION
+++ b/chrome/VERSION
@@ -1,4 +1,4 @@
 MAJOR=47
 MINOR=0
 BUILD=2526
-PATCH=27
+PATCH=28