Reland r57788 - Expose Extension Bindings to Component Applications

chrome/renderer/extensions/extension_renderer_info.h

 // Copyright (c) 2010 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_RENDERER_EXTENSIONS_EXTENSION_RENDERER_INFO_H_
 #define CHROME_RENDERER_EXTENSIONS_EXTENSION_RENDERER_INFO_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
+#include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_extent.h"
 #include "googleurl/src/gurl.h"
 
 struct ViewMsg_ExtensionsUpdated_Params;
 struct ViewMsg_ExtensionRendererInfo;
 
 // Extension information needed in the renderer process along with static
 // methods to look up information about the currently loaded extensions.
 class ExtensionRendererInfo {
  public:
   ExtensionRendererInfo();
   ExtensionRendererInfo(const ExtensionRendererInfo& that);
   ~ExtensionRendererInfo();
 
   const std::string& id() const { return id_; }
   const ExtensionExtent& web_extent() const { return web_extent_; }
   const std::string& name() const { return name_; }
   const GURL& icon_url() const { return icon_url_; }
 
   // Replace the list of extensions with those provided in |params|.
   static void UpdateExtensions(const ViewMsg_ExtensionsUpdated_Params& params);
 
   // Returns the extension ID that the given URL is a part of, or empty if
   // none. This includes web URLs that are part of an extension's web extent.
+  static std::string GetIdByURL(const GURL& url);
+
+  // Returns the ExtensionRendererInfo that the given URL is a part of, or NULL
+  // if none. This includes web URLs that are part of an extension's web extent.
+  // NOTE: This can return NULL if called before UpdateExtensions receives
+  // bulk extension data (e.g. if called from
+  // EventBindings::HandleContextCreated)
   static ExtensionRendererInfo* GetByURL(const GURL& url);
 
   // Returns true if |new_url| is in the extent of the same extension as
   // |old_url|.  Also returns true if neither URL is in an app.
   static bool InSameExtent(const GURL& old_url, const GURL& new_url);
 
   // Look up an ExtensionInfo object by id.
   static ExtensionRendererInfo* GetByID(const std::string& id);
 
+  // Returns true if |url| should get extension api bindings and be permitted
+  // to make api calls. Note that this is independent of what extension
+  // permissions the given extension has been granted.
+  static bool ExtensionBindingsAllowed(const GURL& url);
+
  private:
   void Update(const ViewMsg_ExtensionRendererInfo& info);
 
   FRIEND_TEST_ALL_PREFIXES(ExtensionRendererInfoTest, ExtensionRendererInfo);
 
   std::string id_;
   ExtensionExtent web_extent_;
   std::string name_;
+  Extension::Location location_;
   GURL icon_url_;
 
   // static
   static std::vector<ExtensionRendererInfo>* extensions_;
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_EXTENSION_RENDERER_INFO_H_