Move creation of MediaStream renders from MediaStreamImpl to MediaStreamRenderFactory

content/public/test/layouttest_support.h

Index: content/public/test/layouttest_support.h
diff --git a/content/public/test/layouttest_support.h b/content/public/test/layouttest_support.h
index ce4a66351425101ca13707c357dbb10d858cd103..cf4e695cb1cae695516071ef4c3ce6c5cf153aa5 100644
--- a/content/public/test/layouttest_support.h
+++ b/content/public/test/layouttest_support.h
@@ -102,9 +102,6 @@ void EnableAutoResizeMode(RenderView* render_view,
 void DisableAutoResizeMode(RenderView* render_view,
                            const blink::WebSize& new_size);
 
-// Forces the |render_frame| to use mock media streams.
-void UseMockMediaStreams(RenderFrame* render_frame);
-
 // Provides a text dump of the contents of the given page state.
 std::string DumpBackForwardList(std::vector<PageState>& page_state,
                                 size_t current_index);