Remove app context init from LibraryLoader.

base/android/java/src/org/chromium/base/library_loader/LibraryLoader.java

 // Copyright 2014 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.library_loader;
 
 import android.content.Context;
 import android.os.AsyncTask;
 import android.os.SystemClock;
 
@@ skipping 114 matching lines @@
     private LibraryLoader(int libraryProcessType) {
         mLibraryProcessType = libraryProcessType;
         mPrefetchLibraryHasBeenCalled = new AtomicBoolean();
     }
 
     /**
      *  This method blocks until the library is fully loaded and initialized.
      *
      *  @param context The context in which the method is called.
      */
     public void ensureInitialized(Context context) throws ProcessInitException {

[Torne, 2016/08/18 14:44:55]

Why do we still need to pass the app context in here as a parameter if we're
requiring that all callers already set the global app context? Couldn't we just
use ContextUtils inside here to get it, preventing any possibility that it's
different?

[Peter Wen, 2016/08/18 16:30:01]

Done.

We can actually do this at all the places where application context is needed,
but I'll avoid bloating this CL even more. :)

-        // TODO(wnwen): Move this call appropriately down to the tests that need it.
-        ContextUtils.initApplicationContext(context.getApplicationContext());
         synchronized (sLock) {
             if (mInitialized) {
                 // Already initialized, nothing to do.
                 return;
             }
             loadAlreadyLocked(context);
             initializeAlreadyLocked();
         }
     }
 
@@ skipping 331 matching lines @@
 
     // Finds the ranges corresponding to the native library pages, forks a new
     // process to prefetch these pages and waits for it. The new process then
     // terminates. This is blocking.
     private static native boolean nativeForkAndPrefetchNativeLibrary();
 
     // Returns the percentage of the native library code page that are currently reseident in
     // memory.
     private static native int nativePercentageOfResidentNativeLibraryCode();
 }