[Cronet] Remove JSON serialization of CronetEngine.Builder

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 6a315f76e1d1d1855c5eb6aa73416ba9bcd88c47..c656402ca7bd4f403f6926afc2816959775377f3 100644
--- a/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java
@@ -73,7 +73,8 @@ class CronetUrlRequestContext extends CronetEngine {
     public CronetUrlRequestContext(CronetEngine.Builder builder) {
         CronetLibraryLoader.ensureInitialized(builder.getContext(), builder);
         nativeSetMinLogLevel(getLoggingLevel());
-        mUrlRequestContextAdapter = nativeCreateRequestContextAdapter(builder.toJSONString());
+        mUrlRequestContextAdapter =
+                nativeCreateRequestContextAdapter(createNativeUrlRequestContextConfig(builder));
         if (mUrlRequestContextAdapter == 0) {
             throw new NullPointerException("Context Adapter creation failed.");
         }
@@ -98,6 +99,21 @@ class CronetUrlRequestContext extends CronetEngine {
         }
     }
 
+    static long createNativeUrlRequestContextConfig(CronetEngine.Builder builder) {
+        final long urlRequestContextConfig = nativeCreateRequestContextConfig(
+                builder.getUserAgent(), builder.storagePath(), builder.quicEnabled(),
+                builder.http2Enabled(), builder.sdchEnabled(), builder.dataReductionProxyKey(),
+                builder.dataReductionProxyPrimaryProxy(), builder.dataReductionProxyFallbackProxy(),
+                builder.dataReductionProxySecureProxyCheckUrl(), builder.cacheDisabled(),
+                builder.httpCacheMode(), builder.httpCacheMaxSize(),
+                builder.experimentalQuicConnectionOptions(), builder.mockCertVerifier());
+        for (Builder.QuicHint quicHint : builder.quicHints()) {
+            nativeAddQuicHint(urlRequestContextConfig, quicHint.mHost, quicHint.mPort,
+                    quicHint.mAlternatePort);
+        }
+        return urlRequestContextConfig;
+    }
+
     @Override
     public UrlRequest createRequest(String url, UrlRequest.Callback callback, Executor executor) {
         synchronized (mLock) {
@@ -393,7 +409,17 @@ class CronetUrlRequestContext extends CronetEngine {
     }
 
     // Native methods are implemented in cronet_url_request_context_adapter.cc.
-    private static native long nativeCreateRequestContextAdapter(String config);
+    private static native long nativeCreateRequestContextConfig(String userAgent,
+            String storagePath, boolean quicEnabled, boolean http2Enabled, boolean sdchEnabled,
+            String dataReductionProxyKey, String dataReductionProxyPrimaryProxy,
+            String dataReductionProxyFallbackProxy, String dataReductionProxySecureProxyCheckUrl,
+            boolean disableCache, int httpCacheMode, long httpCacheMaxSize,
+            String experimentalQuicConnectionOptions, long mockCertVerifier);
+
+    private static native void nativeAddQuicHint(
+            long urlRequestContextConfig, String host, int port, int alternatePort);
+
+    private static native long nativeCreateRequestContextAdapter(long urlRequestContextConfig);
 
     private static native int nativeSetMinLogLevel(int loggingLevel);