Page zoom improvements

content/browser/webui/web_ui.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/webui/web_ui.h"
 
 #include "base/i18n/rtl.h"
 #include "base/json/json_writer.h"
 #include "base/stl_util.h"
 #include "base/string_number_conversions.h"
@@ skipping 210 matching lines @@
 
 bool WebUIMessageHandler::ExtractIntegerValue(const ListValue* value,
                                               int* out_int) {
   std::string string_value;
   if (value->GetString(0, &string_value))
     return base::StringToInt(string_value, out_int);
   NOTREACHED();
   return false;
 }
 
+bool WebUIMessageHandler::ExtractDoubleValue(const ListValue* value,
+                                             double* out_value) {
+  std::string string_value;
+  if (value->GetString(0, &string_value))
+    return base::StringToDouble(string_value, out_value);
+  NOTREACHED();
+  return false;
+}
+
 string16 WebUIMessageHandler::ExtractStringValue(const ListValue* value) {
   string16 string16_value;
   if (value->GetString(0, &string16_value))
     return string16_value;
   NOTREACHED();
   return string16();
 }