Remove Channel ID feature from Webview

Bug: 17177684

The feature requires a public api to share channel IDs or disable them.
We will enable the feature after the APIs are added.

The chromium counterpart of this code already landed here:
https://codereview.chromium.org/497963002/

Change-Id: I2ae0b0bf4a9476cf6b2ebc8759c49805f303db6b
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 d0d7d5e..261bed9 100644
--- a/android_webview/browser/net/aw_url_request_context_getter.cc
+++ b/android_webview/browser/net/aw_url_request_context_getter.cc
@@ -210,12 +210,6 @@
 #endif
 
   url_request_context_.reset(builder.Build());
-  server_bound_cert_service_.reset(
-      new net::ServerBoundCertService(
-          new net::DefaultServerBoundCertStore(NULL),
-          base::WorkerPool::GetTaskRunner(true)));
-  url_request_context_->set_server_bound_cert_service(
-      server_bound_cert_service_.get());
   // TODO(mnaganov): Fix URLRequestContextBuilder to use proper threads.
   net::HttpNetworkSession::Params network_session_params;
 
diff --git a/android_webview/browser/net/aw_url_request_context_getter.h b/android_webview/browser/net/aw_url_request_context_getter.h
index 8eedbc4..02eb745 100644
--- a/android_webview/browser/net/aw_url_request_context_getter.h
+++ b/android_webview/browser/net/aw_url_request_context_getter.h
@@ -11,7 +11,6 @@
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/content_browser_client.h"
 #include "net/http/http_network_session.h"
-#include "net/ssl/server_bound_cert_service.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_job_factory.h"
 
@@ -69,7 +68,6 @@
   scoped_ptr<DataReductionProxyConfigService> proxy_config_service_;
   scoped_ptr<net::URLRequestJobFactory> job_factory_;
   scoped_ptr<net::HttpTransactionFactory> main_http_factory_;
-  scoped_ptr<net::ServerBoundCertService> server_bound_cert_service_;
 
   // ProtocolHandlers and interceptors are stored here between
   // SetHandlersAndInterceptors() and the first GetURLRequestContext() call.