Version 2.0.0-dev.51.0

Merge commit 'c164f923970465e393b18c1eb31c2b46043f464a' into dev
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2f0786..710c9a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,24 +1,8 @@
-## 2.0.0-dev.XX.0
-(Add new changes here, and they will be copied to the
- change section for the next dev version)
-
-### Language
-
-#### Strong Mode
-
-### Core library changes
-
-### Dart VM
+## 2.0.0-dev.51.0
 
 ### Tool Changes
 
-#### Pub
-
-#### Other Tools
-
-## 2.0.0-dev.51.0
-
-* `dartfmt`
+#### dartfmt
   * Fixes a runtime error when dart_style is itself run in Dart 2.
   * Force splitting an empty block as the then body of an if with an else.
   * Uses the new lowercase Dart 2 constant names.
diff --git a/tools/VERSION b/tools/VERSION
index a3f39d7..0a3d56d 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -23,9 +23,9 @@
 #  * Making cherry-picks to stable channel
 #     - increase PATCH by 1
 #
-CHANNEL be
+CHANNEL dev
 MAJOR 2
 MINOR 0
 PATCH 0
-PRERELEASE 0
+PRERELEASE 51
 PRERELEASE_PATCH 0