[Android WebView] Add an API to toggle the JS navigator.online property

android_webview/renderer/aw_render_process_observer.cc

Index: android_webview/renderer/aw_render_process_observer.cc
diff --git a/android_webview/renderer/aw_render_process_observer.cc b/android_webview/renderer/aw_render_process_observer.cc
index 5e3ecca5ea7c2c4ad66412a6c46037b7d191f35a..561580cf2ac1cdb17286c141d4f082e09a4892b8 100644
--- a/android_webview/renderer/aw_render_process_observer.cc
+++ b/android_webview/renderer/aw_render_process_observer.cc
@@ -7,6 +7,7 @@
 #include "android_webview/common/render_view_messages.h"
 #include "ipc/ipc_message_macros.h"
 #include "third_party/WebKit/public/web/WebCache.h"
+#include "third_party/WebKit/public/web/WebNetworkStateNotifier.h"
 
 namespace android_webview {
 
@@ -22,6 +23,7 @@ bool AwRenderProcessObserver::OnControlMessageReceived(
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AwRenderProcessObserver, message)
     IPC_MESSAGE_HANDLER(AwViewMsg_ClearCache, OnClearCache)
+    IPC_MESSAGE_HANDLER(AwViewMsg_SetJsOnlineProperty, OnSetJsOnlineProperty)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -36,4 +38,9 @@ void AwRenderProcessObserver::OnClearCache() {
     WebKit::WebCache::clear();
 }
 
+void AwRenderProcessObserver::OnSetJsOnlineProperty(bool network_up) {
+  if (webkit_initialized_)
+    WebKit::WebNetworkStateNotifier::setOnLine(network_up);
+}
+
 }  // nanemspace android_webview