Remove backends.

compiler/java/com/google/dart/compiler/backend/js/TraversalContextProvider.java

Index: compiler/java/com/google/dart/compiler/backend/js/TraversalContextProvider.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/TraversalContextProvider.java b/compiler/java/com/google/dart/compiler/backend/js/TraversalContextProvider.java
deleted file mode 100644
index dca7a06109a4bd41808381d3b5187dbbe967e1e3..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/TraversalContextProvider.java
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2011, the Dart project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//  * Redistributions of source code must retain the above copyright
-//    notice, this list of conditions and the following disclaimer.
-//  * Redistributions in binary form must reproduce the above
-//    copyright notice, this list of conditions and the following
-//    disclaimer in the documentation and/or other materials provided
-//    with the distribution.
-//  * Neither the name of Google Inc. nor the names of its
-//    contributors may be used to endorse or promote products derived
-//    from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package com.google.dart.compiler.backend.js;
-
-import com.google.dart.compiler.ast.DartClassMember;
-import com.google.dart.compiler.backend.js.ast.JsName;
-
-/**
- * @author johnlenz@google.com (John Lenz)
- */
-public interface TraversalContextProvider {
-  DartClassMember<?> getCurrentClassMember();
-
-  JsName createTemporary();
-}