Pass the size to the RenderView on creation.

content/renderer/render_view_impl_params.h

Index: content/renderer/render_view_impl_params.h
diff --git a/content/renderer/render_view_impl_params.h b/content/renderer/render_view_impl_params.h
index ad9a26c61d3651439d627b9bfbadd03bbc38de9d..ec5bfab4dbca7247bd6ebb77ca4c6c5356a41e9d 100644
--- a/content/renderer/render_view_impl_params.h
+++ b/content/renderer/render_view_impl_params.h
@@ -9,7 +9,8 @@
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
-#include "content/common/view_message_enums.h"
+
+struct ViewMsg_Resize_Params;
 
 namespace blink {
 struct WebScreenInfo;
@@ -37,7 +38,8 @@ struct CONTENT_EXPORT RenderViewImplParams {
                        bool hidden,
                        bool never_visible,
                        int32 next_page_id,
-                       const blink::WebScreenInfo& screen_info);
+                       const blink::WebScreenInfo& screen_info,
+                       const ViewMsg_Resize_Params* initial_size);
   ~RenderViewImplParams();
 
   int32 opener_id;
@@ -56,6 +58,7 @@ struct CONTENT_EXPORT RenderViewImplParams {
   bool never_visible;
   int32 next_page_id;
   const blink::WebScreenInfo& screen_info;
+  const ViewMsg_Resize_Params* initial_size;
 };
 
 }  // namespace content