Version 1.13.0-dev.7.5

Branch blink (webkit) for 1.13 dartium
Cherry pick 169b132a6366c0058db43a5e5f2eae3b09032ec9 to dev
Cherry pick 677d4b5bbc97c2aee1b03de8398ffedf977cd703 to dev
diff --git a/tools/VERSION b/tools/VERSION
index 0503714..6051ec3 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 13
 PATCH 0
 PRERELEASE 7
-PRERELEASE_PATCH 4
+PRERELEASE_PATCH 5