Make URLRequestContextAdapter initialization asynchronous

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

Index: components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequestContext.java
diff --git a/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequestContext.java b/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequestContext.java
index 4c3dd44ffca2552a946ab95e2b1425d0d2c81e1f..92dbddf07915ce3ab45c6810c5b2f9aa9daf075c 100644
--- a/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequestContext.java
@@ -37,11 +37,9 @@ public class ChromiumUrlRequestContext {
             String config) {
         mChromiumUrlRequestContextAdapter = nativeCreateRequestContextAdapter(
                 context, userAgent, getLoggingLevel(), config);
-        if (mChromiumUrlRequestContextAdapter == 0)
+        if (mChromiumUrlRequestContextAdapter == 0) {
             throw new NullPointerException("Context Adapter creation failed");
-
-        // TODO(mef): Revisit the need of block here.
-        mStarted.block(2000);
+        }
     }
 
     /**