Version 1.13.0-dev.7.8

Commit of https://codereview.chromium.org/1422853007 to dev
Cherry-pick 7ea2b300f12ad115d5eb70200055f24e173c7c50 to dev
Cherry-pick c34b23ccfe35b9e623d1f9367ae590e8a6798302 to dev
Cherry-pick 53b506b1bf45bf73f568d14b7c285000afe02825 to dev
Cherry-pick a98388886a9e30bdb15b7800314b9a103b2910fe to dev
Cherry-pick be025b841211c5589f162e206160e656c81a8f83 to dev
Cherry-pick 12e94fc1d92995da5ebedbd345cc888727d39e47 to dev
Cherry-pick 7f546e9e0c6bb23afef071a1082cd8acf310ebbd to dev
Cherry-pick e0f8e96dae2c82005dc13499b674d43c059b7a29 to dev
diff --git a/tools/VERSION b/tools/VERSION
index aee7ef0..7486ef6 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 13
 PATCH 0
 PRERELEASE 7
-PRERELEASE_PATCH 7
+PRERELEASE_PATCH 8