Add ExtensionFunctionDispatcher::Delegate::GetAssociatedTabContents

chrome/browser/extensions/extension_function_dispatcher.h

 // Copyright (c) 2009 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_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_DISPATCHER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_DISPATCHER_H_
 
 #include <string>
 #include <set>
 #include <vector>
 
 #include "base/ref_counted.h"
 #include "gfx/native_widget_types.h"
 #include "googleurl/src/gurl.h"
 
 class Browser;
 class Extension;
 class ExtensionDOMUI;
 class ExtensionFunction;
 class ExtensionHost;
 class Profile;
 class RenderViewHost;
 class RenderViewHostDelegate;
+class TabContents;
 class Value;
 
 // A factory function for creating new ExtensionFunction instances.
 typedef ExtensionFunction* (*ExtensionFunctionFactory)();
 
 // ExtensionFunctionDispatcher receives requests to execute functions from
 // Chromium extensions running in a RenderViewHost and dispatches them to the
 // appropriate handler. It lives entirely on the UI thread.
 class ExtensionFunctionDispatcher {
  public:
   class Delegate {
    public:
     // Returns the browser that this delegate is associated with, if any.
     // Returns NULL otherwise.
     virtual Browser* GetBrowser() const = 0;
 
     // Returns the native view for this extension view, if any. This may be NULL
     // if the view is not visible.
     virtual gfx::NativeView GetNativeViewOfHost() = 0;
 
     // Typically, the window is assumed to be the window associated with the
     // result of GetBrowser(). Implementations may override this behavior with
     // this method.
     virtual gfx::NativeWindow GetCustomFrameNativeWindow() {
       return NULL;
     }
 
+    // Asks the delegate for any relevant TabContents associated with this
+    // context. For example, the TabContents in which an infobar or
+    // chrome-extension://<id> URL are being shown. Callers must check for a
+    // NULL return value (as in the case of a background page).
+    virtual TabContents* associated_tab_contents() = 0;
+
    protected:
     virtual ~Delegate() {}
   };
 
   // The peer object allows us to notify ExtensionFunctions when we are
   // destroyed.
   // TODO: this should use WeakPtr
   struct Peer : public base::RefCounted<Peer> {
     explicit Peer(ExtensionFunctionDispatcher* dispatcher)
         : dispatcher_(dispatcher) {}
@@ skipping 81 matching lines @@
 
   // AutomationExtensionFunction requires access to the RenderViewHost
   // associated with us.  We make it a friend rather than exposing the
   // RenderViewHost as a public method as we wouldn't want everyone to
   // start assuming a 1:1 relationship between us and RenderViewHost,
   // whereas AutomationExtensionFunction is by necessity "tight" with us.
   friend class AutomationExtensionFunction;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_DISPATCHER_H_