Enable SPDY explicitly.

android_webview/browser/net/aw_url_request_context_getter.cc

Index: android_webview/browser/net/aw_url_request_context_getter.cc
diff --git a/android_webview/browser/net/aw_url_request_context_getter.cc b/android_webview/browser/net/aw_url_request_context_getter.cc
index a738672d3e8ff76be8ff43ba553e0e3b900773fd..4b72924da0c83daff162578581a6d20c6cf8d428 100644
--- a/android_webview/browser/net/aw_url_request_context_getter.cc
+++ b/android_webview/browser/net/aw_url_request_context_getter.cc
@@ -25,6 +25,7 @@
 #include "net/cookies/cookie_store.h"
 #include "net/dns/mapped_host_resolver.h"
 #include "net/http/http_cache.h"
+#include "net/http/http_stream_factory.h"
 #include "net/proxy/proxy_service.h"
 #include "net/url_request/data_protocol_handler.h"
 #include "net/url_request/file_protocol_handler.h"
@@ -196,6 +197,7 @@ void AwURLRequestContextGetter::InitializeURLRequestContext() {
   }
   PopulateNetworkSessionParams(url_request_context_.get(),
                                &network_session_params);
+
   net::HttpCache* main_cache = new net::HttpCache(
       network_session_params,
       new net::HttpCache::DefaultBackend(
@@ -210,6 +212,10 @@ void AwURLRequestContextGetter::InitializeURLRequestContext() {
 
   job_factory_ = CreateJobFactory(&protocol_handlers_);
   url_request_context_->set_job_factory(job_factory_.get());
+
+  // TODO(sgurun) remove once crbug.com/329681 is fixed. Should be
+  // called only once.
+  net::HttpStreamFactory::EnableNpnSpdy31();
 }
 
 net::URLRequestContext* AwURLRequestContextGetter::GetURLRequestContext() {