Propagate scrolling/marginwidth/marginheight property values to child frame.

components/html_viewer/html_frame_properties.h

Index: components/html_viewer/html_frame_properties.h
diff --git a/components/html_viewer/html_frame_properties.h b/components/html_viewer/html_frame_properties.h
index 8944d463665466d7d1e7256673dea5dce1d7ebc3..f24206cdab68cd6110ea7d15ef5793c7b4aab3db 100644
--- a/components/html_viewer/html_frame_properties.h
+++ b/components/html_viewer/html_frame_properties.h
@@ -11,6 +11,7 @@
 
 namespace blink {
 class WebFrame;
+struct WebFrameOwnerProperties;
 enum class WebSandboxFlags : int;
 class WebString;
 enum class WebTreeScopeType;
@@ -28,6 +29,7 @@ extern const char kPropertyFrameName[];
 extern const char kPropertyFrameOrigin[];
 extern const char kPropertyFrameSandboxFlags[];
 extern const char kPropertyFrameTreeScope[];
+extern const char kPropertyFrameOwnerProperties[];
 
 mojo::Array<uint8_t> FrameNameToClientProperty(const blink::WebString& name);
 blink::WebString FrameNameFromClientProperty(
@@ -43,9 +45,15 @@ mojo::Array<uint8_t> FrameSandboxFlagsToClientProperty(
 bool FrameSandboxFlagsFromClientProperty(const mojo::Array<uint8_t>& new_data,
                                          blink::WebSandboxFlags* flags);
 
+mojo::Array<uint8_t> FrameOwnerPropertiesToClientProperty(
+    const blink::WebFrameOwnerProperties& owner_properties);
+
 url::Origin FrameOrigin(blink::WebFrame* frame);
 mojo::Array<uint8_t> FrameOriginToClientProperty(blink::WebFrame* frame);
 url::Origin FrameOriginFromClientProperty(const mojo::Array<uint8_t>& data);
+bool FrameOwnerPropertiesFromClientProperty(
+    const mojo::Array<uint8_t>& data,
+    blink::WebFrameOwnerProperties* owner_properties);
 
 // Convenience to add |value| to |client_properties| if non-null.
 void AddToClientPropertiesIfValid(