[Safe Browsing] Only check main frame and iframe URLs on Mobile, for speed.

chrome/browser/safe_browsing/local_database_manager.cc

Index: chrome/browser/safe_browsing/local_database_manager.cc
diff --git a/chrome/browser/safe_browsing/local_database_manager.cc b/chrome/browser/safe_browsing/local_database_manager.cc
index fd461dbc7578200464cefa4ea75794e2014a300c..4d3adca69dbfed0e7f43738744922b19d0fce771 100644
--- a/chrome/browser/safe_browsing/local_database_manager.cc
+++ b/chrome/browser/safe_browsing/local_database_manager.cc
@@ -314,6 +314,16 @@ bool LocalSafeBrowsingDatabaseManager::IsSupported() const {
   return true;
 }
 
+bool LocalSafeBrowsingDatabaseManager::ChecksAreAlwaysAsync() const {
+  return false;
+}
+
+bool LocalSafeBrowsingDatabaseManager::CanCheckResourceType(
+    content::ResourceType resource_type) const {
+  // We check all types since most checks are fast.
+  return true;
+}
+
 bool LocalSafeBrowsingDatabaseManager::CanCheckUrl(const GURL& url) const {
   return url.SchemeIs(url::kFtpScheme) ||
          url.SchemeIs(url::kHttpScheme) ||