Remove security_origin member from content::Stream.

content/public/browser/resource_dispatcher_host_delegate.h

Index: content/public/browser/resource_dispatcher_host_delegate.h
diff --git a/content/public/browser/resource_dispatcher_host_delegate.h b/content/public/browser/resource_dispatcher_host_delegate.h
index af56b73ee70b78d8220fed41d627261c80a6624a..95e336bb9bc8e07ac0c9c7d5bb1cab7ab0fd83b1 100644
--- a/content/public/browser/resource_dispatcher_host_delegate.h
+++ b/content/public/browser/resource_dispatcher_host_delegate.h
@@ -108,23 +108,25 @@ class CONTENT_EXPORT ResourceDispatcherHostDelegate {
   virtual bool ShouldForceDownloadResource(
       const GURL& url, const std::string& mime_type);
 
-  // Returns true and sets |security_origin| and |target_id| if a Stream should
-  // be created for the resource.
-  // If true is returned, a new Stream will be created and OnStreamCreated will
-  // be called with the |target_id| returned by this function and a URL to read
-  // the Stream which is accessible from the |security_origin| returned by this
-  // function.
+  // Returns true and sets |origin| and |target_id| if a Stream should be
+  // created for the resource.
+  // If true is returned, a new Stream will be created and OnStreamCreated()
+  // will be called with
+  // - the |target_id| returned by this function
+  // - a StreamHandle instance for the Stream. The handle contains the URL for
+  //   reading the Stream etc.
+  // The Stream's origin will be set to |origin|.
   virtual bool ShouldInterceptResourceAsStream(
       content::ResourceContext* resource_context,
       const GURL& url,
       const std::string& mime_type,
-      GURL* security_origin,
+      GURL* origin,
       std::string* target_id);
 
-  // Informs the delegate that a stream was created. |target_id| will be filled
+  // Informs the delegate that a Stream was created. |target_id| will be filled
   // with the parameter returned by ShouldInterceptResourceAsStream(). The
-  // Stream can be read from the blob URL owned by |stream|, but can only be
-  // read once.
+  // Stream can be read from the blob URL of the Stream, but can only be read
+  // once.
   virtual void OnStreamCreated(
       content::ResourceContext* resource_context,
       int render_process_id,