Revert of Revert of [Android] JUnit runner + gyp changes.

testing/android/junit/java/src/org/chromium/testing/local/GtestListener.java

Index: testing/android/junit/java/src/org/chromium/testing/local/GtestListener.java
diff --git a/testing/android/junit/java/src/org/chromium/testing/local/GtestListener.java b/testing/android/junit/java/src/org/chromium/testing/local/GtestListener.java
new file mode 100644
index 0000000000000000000000000000000000000000..122d1355c021c128143c1dd0921397626b49e6f7
--- /dev/null
+++ b/testing/android/junit/java/src/org/chromium/testing/local/GtestListener.java
@@ -0,0 +1,80 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.testing.local;
+
+import org.junit.runner.Description;
+import org.junit.runner.Result;
+import org.junit.runner.notification.Failure;
+import org.junit.runner.notification.RunListener;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/** A JUnit RunListener that emulates GTest output to the extent that it can.
+ */
+public class GtestListener extends RunListener {
+
+    private Set<Description> mFailedTests;
+    private final GtestLogger mLogger;
+    private long mRunStartTimeMillis;
+    private long mTestStartTimeMillis;
+    private int mTestsPassed;
+    private boolean mCurrentTestPassed;
+
+    public GtestListener(GtestLogger logger) {
+        mLogger = logger;
+    }
+
+    /** Called before any tests run.
+     */
+    @Override
+    public void testRunStarted(Description d) throws Exception {
+        mLogger.testRunStarted(d.testCount());
+        mRunStartTimeMillis = System.currentTimeMillis();
+        mTestsPassed = 0;
+        mFailedTests = new HashSet<Description>();
+        mCurrentTestPassed = true;
+    }
+
+    /** Called after all tests run.
+     */
+    @Override
+    public void testRunFinished(Result r) throws Exception {
+        long elapsedTimeMillis = System.currentTimeMillis() - mRunStartTimeMillis;
+        mLogger.testRunFinished(mTestsPassed, mFailedTests, elapsedTimeMillis);
+    }
+
+    /** Called when a test is about to start.
+     */
+    @Override
+    public void testStarted(Description d) throws Exception {
+        mCurrentTestPassed = true;
+        mLogger.testStarted(d);
+        mTestStartTimeMillis = System.currentTimeMillis();
+    }
+
+    /** Called when a test has just finished.
+     */
+    @Override
+    public void testFinished(Description d) throws Exception {
+        long testElapsedTimeMillis = System.currentTimeMillis() - mTestStartTimeMillis;
+        mLogger.testFinished(d, mCurrentTestPassed, testElapsedTimeMillis);
+        if (mCurrentTestPassed) {
+            ++mTestsPassed;
+        } else {
+            mFailedTests.add(d);
+        }
+    }
+
+    /** Called when a test fails.
+     */
+    @Override
+    public void testFailure(Failure f) throws Exception {
+        mCurrentTestPassed = false;
+        mLogger.testFailed(f);
+    }
+
+}
+