Added Web Share (navigator.share) experimental web API (stub).

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 16eb32286ffd4674c44d1ecf3f73f6e0705fcbe8..9f4d63d2f79c5e6b269a3ceb05e29c59836bcd9c 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -45,6 +45,7 @@
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "content/browser/background_sync/background_sync_service_impl.h"
 #include "content/browser/bad_message.h"
+#include "content/browser/ballista/ballista_service_impl.h"
 #include "content/browser/bluetooth/bluetooth_dispatcher_host.h"
 #include "content/browser/browser_child_process_host_impl.h"
 #include "content/browser/browser_main.h"
@@ -1099,6 +1100,11 @@ void RenderProcessHostImpl::RegisterMojoServices() {
       base::Bind(&RenderProcessHostImpl::CreateStoragePartitionService,
                  base::Unretained(this)));
 
+  // TODO(mgiuca): Only add this if #experimental-web-platform-features is
+  // enabled.
+  mojo_application_host_->service_registry()->AddService(
+      base::Bind(&BallistaServiceImpl::Create, GetBrowserContext()));
+
 #if defined(OS_ANDROID)
   ServiceRegistrarAndroid::RegisterProcessHostServices(
       mojo_application_host_->service_registry_android());