Remove app context init from LibraryLoader.

base/android/javatests/src/org/chromium/base/EarlyTraceEventTest.java

 // Copyright 2016 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.base;
 
 import android.os.Process;
 import android.os.SystemClock;
 import android.test.InstrumentationTestCase;
 import android.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.base.library_loader.LibraryLoader;
 import org.chromium.base.library_loader.LibraryProcessType;
 import org.chromium.base.test.util.Feature;
 
 /**
  * Tests for {@link EarlyTraceEvent}.
  */
 public class EarlyTraceEventTest extends InstrumentationTestCase {
     private static final String EVENT_NAME = "MyEvent";
     private static final String EVENT_NAME2 = "MyOtherEvent";
 
     @Override
     protected void setUp() throws Exception {
         super.setUp();
-        LibraryLoader.get(LibraryProcessType.PROCESS_BROWSER)
-                .ensureInitialized(getInstrumentation().getTargetContext());
-
+        LibraryLoader.get(LibraryProcessType.PROCESS_BROWSER).ensureInitialized();
         EarlyTraceEvent.sState = EarlyTraceEvent.STATE_DISABLED;
         EarlyTraceEvent.sCompletedEvents = null;
         EarlyTraceEvent.sPendingEvents = null;
     }
 
     @SmallTest
     @Feature({"Android-AppBase"})
     public void testCanRecordEvent() {
         EarlyTraceEvent.enable();
         long myThreadId = Process.myTid();
@@ skipping 104 matching lines @@
             }
         };
         thread.start();
         thread.join();
 
         assertEquals(1, EarlyTraceEvent.sCompletedEvents.size());
         EarlyTraceEvent.Event event = EarlyTraceEvent.sCompletedEvents.get(0);
         assertEquals(threadId[0], event.mThreadId);
     }
 }