Revert of [Cronet] Avoid crashing when CronetEngines are created on multiple threads

components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java

Index: components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
diff --git a/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java b/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
index 5fbfcbf4a43c4c234ea68988fec508afe9557723..5353b8a9cf40674832f1c17e5c0e1a26adf5d481 100644
--- a/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
+++ b/components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java
@@ -1125,30 +1125,4 @@
             assertTrue(loader.wasCalled());
         }
     }
-
-    // Creates a CronetEngine on another thread and then one on the main thread.  This shouldn't
-    // crash.
-    @SmallTest
-    @Feature({"Cronet"})
-    public void testThreadedStartup() throws Exception {
-        final ConditionVariable otherThreadDone = new ConditionVariable();
-        final ConditionVariable uiThreadDone = new ConditionVariable();
-        new Handler(Looper.getMainLooper()).post(new Runnable() {
-            public void run() {
-                final CronetEngine.Builder builder =
-                        new CronetEngine.Builder(getContext()).setLibraryName("cronet_tests");
-                new Thread() {
-                    public void run() {
-                        CronetEngine cronetEngine = builder.build();
-                        otherThreadDone.open();
-                        cronetEngine.shutdown();
-                    }
-                }.start();
-                otherThreadDone.block();
-                builder.build().shutdown();
-                uiThreadDone.open();
-            }
-        });
-        assertTrue(uiThreadDone.block(1000));
-    }
 }