Revert of patch suspect of causing Android GPU builds to start failing

components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java

Index: components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
diff --git a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
index 1c4140cbcdbc4e266121b385596e21bd8f7c73c1..9fd0059786cb37800cf349f82f0d2df360d20fc5 100644
--- a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
@@ -76,7 +76,7 @@ class CronetUrlRequestContext extends CronetEngine {
             new ObserverList<RequestFinishedListener>();
 
     @UsedByReflection("CronetEngine.java")
-    public CronetUrlRequestContext(final CronetEngine.Builder builder) {
+    public CronetUrlRequestContext(CronetEngine.Builder builder) {
         CronetLibraryLoader.ensureInitialized(builder.getContext(), builder);
         nativeSetMinLogLevel(getLoggingLevel());
         synchronized (mLock) {
@@ -91,7 +91,6 @@ class CronetUrlRequestContext extends CronetEngine {
         Runnable task = new Runnable() {
             @Override
             public void run() {
-                CronetLibraryLoader.ensureInitializedOnMainThread(builder.getContext());
                 synchronized (mLock) {
                     // mUrlRequestContextAdapter is guaranteed to exist until
                     // initialization on main and network threads completes and