Convert ChromeViewHostMsg_UpdatedCacheStats to use mojo.

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 25d08d97f8c6970613ec011a0139e71afa8f58b5..b63a9cc032a952782b39035c58f7228ee0f75a4d 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.cc
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.cc
@@ -63,8 +63,6 @@ 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(ChromeViewHostMsg_UpdatedCacheStats,
-                        OnUpdatedCacheStats)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_AllowDatabase, OnAllowDatabase)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_AllowDOMStorage, OnAllowDOMStorage)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(
@@ -89,7 +87,6 @@ void ChromeRenderMessageFilter::OverrideThreadForMessage(
 #if BUILDFLAG(ENABLE_PLUGINS)

[nigeltao1, 2017/04/29 07:13:42]

FTR, I also expanded this #if a bit. I guess that this switch has been whittled
down in the time this CL has been in review.

     case ChromeViewHostMsg_IsCrashReportingEnabled::ID:
 #endif
-    case ChromeViewHostMsg_UpdatedCacheStats::ID:
       *thread = BrowserThread::UI;
       break;
     default:
@@ -119,12 +116,6 @@ void ChromeRenderMessageFilter::OnPreconnect(const GURL& url,
   }
 }
 
-void ChromeRenderMessageFilter::OnUpdatedCacheStats(uint64_t capacity,
-                                                    uint64_t size) {
-  web_cache::WebCacheManager::GetInstance()->ObserveStats(render_process_id_,
-                                                          capacity, size);
-}
-
 void ChromeRenderMessageFilter::OnAllowDatabase(
     int render_frame_id,
     const GURL& origin_url,