Remove backends.

compiler/javatests/com/google/dart/compiler/backend/js/analysis/TreeShakerTest.java

Index: compiler/javatests/com/google/dart/compiler/backend/js/analysis/TreeShakerTest.java
diff --git a/compiler/javatests/com/google/dart/compiler/backend/js/analysis/TreeShakerTest.java b/compiler/javatests/com/google/dart/compiler/backend/js/analysis/TreeShakerTest.java
deleted file mode 100644
index 543ca4fa9f29940d084daa5a3e2458d9612ec369..0000000000000000000000000000000000000000
--- a/compiler/javatests/com/google/dart/compiler/backend/js/analysis/TreeShakerTest.java
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-
-package com.google.dart.compiler.backend.js.analysis;
-
-import com.google.dart.compiler.DartCompilerContext;
-import com.google.dart.compiler.LibrarySource;
-import com.google.dart.compiler.MockLibrarySource;
-import com.google.dart.compiler.Source;
-import com.google.dart.compiler.testing.TestCompilerContext;
-
-import junit.framework.TestCase;
-
-import java.io.IOException;
-import java.io.Reader;
-import java.io.StringReader;
-import java.io.StringWriter;
-import java.io.Writer;
-
-/**
- * Tests the JS based tree shaker used in incremental compilation.
- */
-public class TreeShakerTest extends TestCase {
-  class MockCompilerContext extends TestCompilerContext {
-    private final String srcCode;
-
-    public MockCompilerContext(String srcCode) {
-      this.srcCode = srcCode;
-    }
-
-    @Override
-    public Reader getArtifactReader(Source source, String part, String extension) {
-      return new StringReader(srcCode);
-    }
-  }
-
-  /**
-   * Tests that {@link TreeShaker#reduce(LibrarySource, DartCompilerContext, String, Writer)} can
-   * remove unused methods.
-   */
-  public void testReduce() throws IOException {
-    StringBuffer inputSrc = new StringBuffer();
-    inputSrc.append("function A() {}\n");
-    inputSrc.append("A.prototype.foo = function(){}\n");
-    inputSrc.append("function B() {}\n");
-    inputSrc.append("B.prototype.foo = function(){}\n");
-    inputSrc.append("function C() { A(); }\n");
-    inputSrc.append("RunEntry(C);\n");
-
-    StringWriter outputCode = new StringWriter();
-
-    TreeShaker.reduce(new MockLibrarySource(), new MockCompilerContext(inputSrc.toString()), "",
-        outputCode);
-
-    StringBuffer outputSrc = new StringBuffer();
-    outputSrc.append("function A() {}\n");
-    outputSrc.append("function C() { A(); }\n");
-    outputSrc.append("RunEntry(C);\n");
-
-    assertEquals(outputSrc.toString(), outputCode.toString());
-  }
-
-  /**
-   * Tests that {@link TreeShaker#reduce(LibrarySource, DartCompilerContext, String, Writer)} can 
-   * handle empty code.
-   */
-  public void testReduceEmpty() throws IOException {
-    StringReader inputSrc = new StringReader("");
-    StringWriter outputSrc = new StringWriter();
-    TreeShaker.reduce(new MockLibrarySource(), new MockCompilerContext(""), "", outputSrc);
-    
-    assertEquals("", outputSrc.toString());
-  }
-}