pinning to 46.0.2478.0.

Change-Id: Ie213b7fd3ac97da70b38f7be87974fd9bae91d8e
Reviewed-on: https://chromium-review.googlesource.com/292986
Reviewed-by: Matthew Yuan <matthewyuan@chromium.org>
Tested-by: Matthew Yuan <matthewyuan@chromium.org>
diff --git a/chromeos-base/chromeos-chrome/chromeos-chrome-46.0.2472.0_rc-r1.ebuild b/chromeos-base/chromeos-chrome/chromeos-chrome-46.0.2478.0_rc-r1.ebuild
similarity index 100%
rename from chromeos-base/chromeos-chrome/chromeos-chrome-46.0.2472.0_rc-r1.ebuild
rename to chromeos-base/chromeos-chrome/chromeos-chrome-46.0.2478.0_rc-r1.ebuild