[omnibox] Ignore empty search suggestions.

chrome/browser/autocomplete/search_provider.cc

Index: chrome/browser/autocomplete/search_provider.cc
diff --git a/chrome/browser/autocomplete/search_provider.cc b/chrome/browser/autocomplete/search_provider.cc
index 0ec478c20151c53609d0992b57677dbfdfb8ffbd..a13ef3ed95ff723b087b81ef964f36c73e846c1a 100644
--- a/chrome/browser/autocomplete/search_provider.cc
+++ b/chrome/browser/autocomplete/search_provider.cc
@@ -455,6 +455,12 @@ bool SearchProvider::ParseSuggestResults(Value* root_val,
         !suggestion_val->GetAsString(&suggestion_str))
       return false;
 
+    // Google search may return empty suggestions for weird input characters,
+    // they make no sense at all and can cause problem in our code.
+    // See http://crbug.com/56214
+    if (!suggestion_str.length())
+      continue;
+
     Value* type_val;
     std::string type_str;
     if (type_list && type_list->Get(i, &type_val) &&