Bump version to 5.7.0.

BUG=None
TEST=None

Change-Id: Icee82813b47d758f373b0022015d12a93f7f118e
Reviewed-on: https://chromium-review.googlesource.com/538320
Reviewed-by: Daichi Hirono <hirono@chromium.org>
Tested-by: Tomasz Mikolajewski <mtomasz@chromium.org>
diff --git a/src/manifest-tests.json b/src/manifest-tests.json
index d6ce7ac..ea908dd 100644
--- a/src/manifest-tests.json
+++ b/src/manifest-tests.json
@@ -7,7 +7,7 @@
   "manifest_version": 2,
   "name": "__MSG_name__",
   "description": "__MSG_description__",
-  "version": "4.6.0",
+  "version": "4.7.0",
   "default_locale": "en",
   "minimum_chrome_version": "56.0.0.0",
   "icons": {
diff --git a/src/manifest.json b/src/manifest.json
index 6dd6908..fa46de0 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": 2,
   "name": "__MSG_name__",
   "description": "__MSG_description__",
-  "version": "4.6.0",
+  "version": "4.7.0",
   "default_locale": "en",
   "minimum_chrome_version": "56.0.0.0",
   "icons": {