Remove most usages of guava.

content/public/android/java/src/org/chromium/content/browser/ChildProcessConnectionImpl.java

 // Copyright 2013 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.content.browser;
 
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.os.Bundle;
 import android.os.DeadObjectException;
 import android.os.IBinder;
 import android.os.ParcelFileDescriptor;
 import android.os.RemoteException;
 import android.util.Log;
 
-import com.google.common.annotations.VisibleForTesting;
-
 import org.chromium.base.CpuFeatures;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.TraceEvent;
+import org.chromium.base.VisibleForTesting;
 import org.chromium.base.library_loader.Linker;
 import org.chromium.content.app.ChildProcessService;
 import org.chromium.content.app.ChromiumLinkerParams;
 import org.chromium.content.common.IChildProcessCallback;
 import org.chromium.content.common.IChildProcessService;
 
 import java.io.IOException;
 
 /**
  * Manages a connection between the browser activity and a child service.
@@ skipping 404 matching lines @@
             return true;
         }
         return false;
     }
 
     @VisibleForTesting
     public boolean isConnected() {
         return mService != null;
     }
 }