[Icons NTP] Working prototype to fetch, store, and display big icons.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 9d7e88cd4d1ad66827758bb3337020523bd66c38..febff1c61c23d46e768c8ec56391d4ab8f0c6dcd 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -1386,8 +1386,15 @@ bool ChromeContentRendererClient::WillSendRequest(
   if (search_box && url.SchemeIs(chrome::kChromeSearchScheme)) {
     if (url.host() == chrome::kChromeUIThumbnailHost)
       return search_box->GenerateThumbnailURLFromTransientURL(url, new_url);
-    else if (url.host() == chrome::kChromeUIFaviconHost)
+    if (url.host() == chrome::kChromeUIFaviconHost)
       return search_box->GenerateFaviconURLFromTransientURL(url, new_url);
+    if (url.host() == chrome::kChromeUIFallbackIconHost)
+      return search_box->GenerateFallbackIconURLFromTransientURL(url, new_url);
+
+    // More restrictions for big icon host, since it may return 404 and we
+    // don't want search providers to use this as signal
+    if (url.host() == chrome::kChromeUIBigIconHost)
+      return search_box->GenerateBigIconURLFromTransientURL(url, new_url);
   }
 
   return false;