Expose RenderFrameHost::GetLastCommittedOrigin().

content/public/browser/render_frame_host.h

 // Copyright 2013 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_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
 #include "content/common/content_export.h"
 #include "content/public/common/console_message_level.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "url/gurl.h"
+#include "url/origin.h"
 
 namespace base {
 class Value;
 }
 
 namespace content {
 class RenderProcessHost;
 class RenderViewHost;
 class ServiceRegistry;
 class SiteInstance;
@@ skipping 42 matching lines @@
   // quite possible for a frame to have no name, in which case GetFrameName will
   // return an empty string.
   virtual const std::string& GetFrameName() = 0;
 
   // Returns true if the frame is out of process.
   virtual bool IsCrossProcessSubframe() = 0;
 
   // Returns the last committed URL of the frame.
   virtual GURL GetLastCommittedURL() = 0;
 
+  // Returns the last committed origin of the frame.

[alexmos, 2015/11/24 18:23:48]

Is it worth adding some sort of note here that it's incorrect to call this on a
non-current RFH?

[ncarter (slow), 2015/11/24 19:35:08]

Done.

+  virtual url::Origin GetLastCommittedOrigin() = 0;
+
   // Returns the associated widget's native view.
   virtual gfx::NativeView GetNativeView() = 0;
 
   // Adds |message| to the DevTools console.
   virtual void AddMessageToConsole(ConsoleMessageLevel level,
                                    const std::string& message) = 0;
 
   // Runs some JavaScript in this frame's context. If a callback is provided, it
   // will be used to return the result, when the result is available.
   // This API can only be called on chrome:// or chrome-devtools:// URLs.
@@ skipping 61 matching lines @@
 
  private:
   // This interface should only be implemented inside content.
   friend class RenderFrameHostImpl;
   RenderFrameHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_