Forward MIME types to BrowserPlugin when a viewer is specified.

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 598cffbe099eac74157bb64c21ddbd23ff5923c8..3fc78c9ff48f58c221cb7d5c6e57904ad27aa2ca 100644
--- a/content/public/browser/resource_dispatcher_host_delegate.h
+++ b/content/public/browser/resource_dispatcher_host_delegate.h
@@ -109,7 +109,9 @@ class CONTENT_EXPORT ResourceDispatcherHostDelegate {
       const GURL& url,
       const std::string& mime_type,
       GURL* origin,
-      std::string* target_id);
+      std::string* target_id,
+      std::string* payload,
+      std::string* view_id);
 
   // Informs the delegate that a Stream was created. |target_id| will be filled
   // with the parameter returned by ShouldInterceptResourceAsStream(). The
@@ -120,6 +122,7 @@ class CONTENT_EXPORT ResourceDispatcherHostDelegate {
       int render_process_id,
       int render_view_id,
       const std::string& target_id,
+      const std::string& view_id,
       scoped_ptr<StreamHandle> stream,
       int64 expected_content_size);