Page zoom improvements

content/browser/webui/web_ui.h

 // 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.
 
 #ifndef CONTENT_BROWSER_WEBUI_WEB_UI_H_
 #define CONTENT_BROWSER_WEBUI_WEB_UI_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 201 matching lines @@
   static void SetURLAndTitle(base::DictionaryValue* dictionary,
                              string16 title,
                              const GURL& gurl);
 
   // This is where subclasses specify which messages they'd like to handle.
   virtual void RegisterMessages() = 0;
 
   // Extract an integer value from a list Value.
   bool ExtractIntegerValue(const base::ListValue* value, int* out_int);
 
+  // Extract a floating point (double) value from a list Value.
+  bool ExtractDoubleValue(const base::ListValue* value, double* out_value);
+
   // Extract a string value from a list Value.
   string16 ExtractStringValue(const base::ListValue* value);
 
   // Returns the attached WebUI for this handler.
   WebUI* web_ui() const { return web_ui_; }
 
   WebUI* web_ui_;  // TODO(wyck): Make private after merge conflicts go away.
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebUIMessageHandler);
 };
 
 #endif  // CONTENT_BROWSER_WEBUI_WEB_UI_H_