Move the parsing of "chrome_url_overrides" out of Extension.

chrome/common/extensions/manifest_url_handler.h

 // Copyright (c) 2012 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 CHROME_COMMON_EXTENSIONS_MANIFEST_URL_HANDLER_H_
 #define CHROME_COMMON_EXTENSIONS_MANIFEST_URL_HANDLER_H_
 
 #include <string>
 
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/manifest_handler.h"
 
 namespace extensions {
 
 // A structure to hold various URLs like devtools_page, homepage_url, etc
 // that may be specified in the manifest of an extension.
 struct ManifestURL : public Extension::ManifestData {
   GURL url_;
 
   // Returns the DevTools Page for this extension.
   static const GURL& GetDevToolsPage(const Extension* extension);
 
   // Returns the Homepage URL for this extension.
   // If homepage_url was not specified in the manifest,
   // this returns the Google Gallery URL. For third-party extensions,
   // this returns a blank GURL.
   static const GURL GetHomepageURL(const Extension* extension);
 };
 
+// A structure to hold the chrome URL overrides that may be specified
+// in the manifest of an extension.
+struct URLOverrides : public Extension::ManifestData {
+  typedef std::map<const std::string, GURL> URLOverrideMap;
+
+  // Define out of line constructor/destructor to please Clang.
+  URLOverrides();
+  virtual ~URLOverrides();
+
+  static const URLOverrideMap&
+      GetChromeURLOverrides(const Extension* extension);
+
+  // A map of chrome:// hostnames (newtab, downloads, etc.) to Extension URLs
+  // which override the handling of those URLs. (see ExtensionOverrideUI).
+  URLOverrideMap chrome_url_overrides_;
+};
+
 // Parses the "devtools_page" manifest key.
 class DevToolsPageHandler : public ManifestHandler {
  public:
   DevToolsPageHandler();
   virtual ~DevToolsPageHandler();
 
   virtual bool Parse(const base::Value* value,
                      Extension* extension,
                      string16* error) OVERRIDE;
 };
 
 // Parses the "homepage_url" manifest key.
 class HomepageURLHandler : public ManifestHandler {
  public:
   HomepageURLHandler();
   virtual ~HomepageURLHandler();
 
   virtual bool Parse(const base::Value* value,
                      Extension* extension,
                      string16* error) OVERRIDE;
 };
 
+// Parses the "chrome_url_overrides" manifest key.
+class URLOverridesHandler : public ManifestHandler {
+ public:
+  URLOverridesHandler();
+  virtual ~URLOverridesHandler();
+
+  virtual bool Parse(const base::Value* value,
+                     Extension* extension,
+                     string16* error) OVERRIDE;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_URL_HANDLER_H_