Fix errors of e2e tests.

MyTracksTest/src/com/google/android/apps/mytracks/endtoendtest/ExportAndImportTest.java

@@ -57,8 +57,6 @@ public class ExportAndImportTest extends ActivityInstrumentationTestCase2<TrackL
     // Create a empty track.
     EndToEndTestUtils.createSimpleTrack(0, true);
     instrumentation.waitForIdleSync();
-    EndToEndTestUtils.SOLO.goBack();
-    instrumentation.waitForIdleSync();
     checkExportAndImport();
   }
   

MyTracksTest/src/com/google/android/apps/mytracks/endtoendtest/MenuItemsTest.java

@@ -86,7 +86,6 @@ public class MenuItemsTest extends ActivityInstrumentationTestCase2<TrackListAct
    */
   public void testSearch() {
     EndToEndTestUtils.createSimpleTrack(0, true);
-    EndToEndTestUtils.SOLO.goBack();
     EndToEndTestUtils.findMenuItem(activityMyTracks.getString(R.string.menu_search), true);
     EndToEndTestUtils.enterTextAvoidSoftKeyBoard(0, EndToEndTestUtils.trackName);
     sendKeys(KeyEvent.KEYCODE_ENTER);

MyTracksTest/src/com/google/android/apps/mytracks/endtoendtest/PauseRecordingTest.java

@@ -144,5 +144,11 @@ public class PauseRecordingTest extends ActivityInstrumentationTestCase2<TrackLi
       assertEquals(expectResumeNumber, numberOfResumePoint);
     }
   }
+  
+  @Override
+  protected void tearDown() throws Exception {
+    EndToEndTestUtils.SOLO.finishOpenedActivities();
+    super.tearDown();
+  }
 
 }