Speculatively launch Service Workers on mouse/touch events. [2/5]

chrome/browser/renderer_host/chrome_render_message_filter.cc

Index: chrome/browser/renderer_host/chrome_render_message_filter.cc
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.cc b/chrome/browser/renderer_host/chrome_render_message_filter.cc
index 1a48364b54c7839d39063d124d3d35240d9f2a58..dc8a195fd00c43fd4ee178f73028fa87744436a5 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.cc
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.cc
@@ -66,6 +66,7 @@ bool ChromeRenderMessageFilter::OnMessageReceived(const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(ChromeRenderMessageFilter, message)
     IPC_MESSAGE_HANDLER(NetworkHintsMsg_DNSPrefetch, OnDnsPrefetch)
     IPC_MESSAGE_HANDLER(NetworkHintsMsg_Preconnect, OnPreconnect)
+    IPC_MESSAGE_HANDLER(NetworkHintsMsg_NavigationHint, OnNavigationHint)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_UpdatedCacheStats,
                         OnUpdatedCacheStats)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_AllowDatabase, OnAllowDatabase)
@@ -128,6 +129,12 @@ void ChromeRenderMessageFilter::OnPreconnect(const GURL& url,
   }
 }
 
+void ChromeRenderMessageFilter::OnNavigationHint(
+    const GURL& url,
+    blink::WebNavigationHintType type) {
+  // TODO(horo): Implement this.

[kinuko, 2016/07/18 15:24:45]

I really don't think this should go through //chrome, could we have a TODO
comment here that having this in chrome is not really desirable/necessary and we
should consider moving this to //content?

[horo, 2016/07/19 02:09:43]

Done.

+}
+
 void ChromeRenderMessageFilter::OnUpdatedCacheStats(
     uint64_t min_dead_capacity,
     uint64_t max_dead_capacity,