Remove the discrepencies between chrome and android_webview print

android_webview/browser/aw_content_browser_client.cc

Index: android_webview/browser/aw_content_browser_client.cc
diff --git a/android_webview/browser/aw_content_browser_client.cc b/android_webview/browser/aw_content_browser_client.cc
index 8af695fb76d44e340c68422753d79263de764e58..0d2d46f57214b39bff4b7fb88cce887c288cd885 100644
--- a/android_webview/browser/aw_content_browser_client.cc
+++ b/android_webview/browser/aw_content_browser_client.cc
@@ -11,6 +11,7 @@
 #include "android_webview/browser/aw_contents_io_thread_client.h"
 #include "android_webview/browser/aw_cookie_access_policy.h"
 #include "android_webview/browser/aw_dev_tools_manager_delegate.h"
+#include "android_webview/browser/aw_printing_message_filter.h"
 #include "android_webview/browser/aw_quota_permission_context.h"
 #include "android_webview/browser/aw_web_preferences_populater.h"
 #include "android_webview/browser/jni_dependency_factory.h"
@@ -211,6 +212,7 @@ void AwContentBrowserClient::RenderProcessWillLaunch(
 
   host->AddFilter(new AwContentsMessageFilter(host->GetID()));
   host->AddFilter(new cdm::CdmMessageFilterAndroid());
+  host->AddFilter(new AwPrintingMessageFilter(host->GetID()));
 }
 
 net::URLRequestContextGetter* AwContentBrowserClient::CreateRequestContext(