Log output of adb shell am output in CrossAppDragAndDropTests

Adding more logging to help track down test failures when
running on test bots.

Bug: 32905009
Test: run cts -m CtsDragAndDropHostTestCases

Change-Id: Ie206b93c00d3420c45b84bc233686b0b14a3de86
diff --git a/hostsidetests/services/windowmanager/src/android/wm/cts/CrossAppDragAndDropTests.java b/hostsidetests/services/windowmanager/src/android/wm/cts/CrossAppDragAndDropTests.java
index fa1ae69..26aa7ad 100644
--- a/hostsidetests/services/windowmanager/src/android/wm/cts/CrossAppDragAndDropTests.java
+++ b/hostsidetests/services/windowmanager/src/android/wm/cts/CrossAppDragAndDropTests.java
@@ -19,6 +19,7 @@
 import com.android.tradefed.device.CollectingOutputReceiver;
 import com.android.tradefed.device.DeviceNotAvailableException;
 import com.android.tradefed.device.ITestDevice;
+import com.android.tradefed.log.LogUtil.CLog;
 import com.android.tradefed.testtype.DeviceTestCase;
 
 import java.util.HashMap;
@@ -218,6 +219,12 @@
         CollectingOutputReceiver outputReceiver = new CollectingOutputReceiver();
         mDevice.executeShellCommand(AM_STACK_LIST, outputReceiver);
         final String output = outputReceiver.getOutput();
+        final StringBuilder builder = new StringBuilder();
+        builder.append("Finding task info for task: ");
+        builder.append(name);
+        builder.append("\nParsing adb shell am output: " );
+        builder.append(output);
+        CLog.i(builder.toString());
         for (String line : output.split("\\n")) {
             if (line.contains(name)) {
                 return line;