Remove backends.

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

Index: compiler/java/com/google/dart/compiler/backend/js/JsNameProvider.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/JsNameProvider.java b/compiler/java/com/google/dart/compiler/backend/js/JsNameProvider.java
deleted file mode 100644
index d8469e206305b5fb8241b764524ea253ad91ac8d..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/JsNameProvider.java
+++ /dev/null
@@ -1,87 +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.backend.js.ast.JsName;
-import com.google.dart.compiler.backend.js.ast.JsProgram;
-import com.google.dart.compiler.backend.js.ast.JsScope;
-import com.google.dart.compiler.common.Symbol;
-import com.google.dart.compiler.resolver.ClassElement;
-import com.google.dart.compiler.resolver.ElementKind;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * A helper class for managing global names.
- * @author johnlenz@google.com (John Lenz)
- */
-class JsNameProvider {
-  private final DartMangler mangler;
-  private Map<Symbol, JsName> names = new HashMap<Symbol, JsName>();
-  private JsScope globalScope;
-
-  JsNameProvider(JsProgram program, DartMangler mangler) {
-    this.globalScope = program.getScope();
-    this.mangler = mangler;
-  }
-
-  /**
-   * Returns the JsName for the given element. If the element is global and
-   * hasn't been declared yet, it is done now.
-   */
-  JsName getName(Symbol symbol) {
-    JsName jsName = names.get(symbol);
-    if (jsName != null) {
-      assert !jsName.getShortIdent().equals("Object$Dart");
-      return jsName;
-    }
-    assert ElementKind.of(symbol).equals(ElementKind.CLASS)
-        || ElementKind.of(symbol).equals(ElementKind.FUNCTION_TYPE_ALIAS)
-        : "Only classes or typedefs can be lazily declared. Undeclared: "
-        + symbol.getOriginalSymbolName();
-    ClassElement classElement = (ClassElement) symbol;
-    String name = classElement.getName();
-    String nativeName = classElement.getNativeName();
-    if (nativeName == null) {
-      String mangledClassName = mangler.mangleClassName(classElement);
-      jsName = globalScope.declareName(mangledClassName, mangledClassName, name);
-    } else {
-      jsName = globalScope.declareName(nativeName);
-    }
-    // Class names are globally accessible.
-    jsName.setObfuscatable(false);
-    names.put(symbol, jsName);
-    assert !jsName.getShortIdent().equals("Object$Dart") : "unexpected " + ((ClassElement) symbol).getNode().getSource().getName();
-    return jsName;
-  }
-
-  void setName(Symbol symbol, JsName name) {
-    names.put(symbol, name);
-  }
-}