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

third_party/WebKit/public/web/WebLocalFrame.h

Index: third_party/WebKit/public/web/WebLocalFrame.h
diff --git a/third_party/WebKit/public/web/WebLocalFrame.h b/third_party/WebKit/public/web/WebLocalFrame.h
index 44bace909f42b7733895f321970c88a94a52aa2e..9f565932b5da2660e4c932205473cabfcd52f5d4 100644
--- a/third_party/WebKit/public/web/WebLocalFrame.h
+++ b/third_party/WebKit/public/web/WebLocalFrame.h
@@ -52,13 +52,22 @@ public:
     // Used when we might swap from a remote frame to a local frame.
     // Creates a provisional, semi-attached frame that will be fully
     // swapped into the frame tree if it commits.
-    virtual void initializeToReplaceRemoteFrame(WebRemoteFrame*, const WebString& name, WebSandboxFlags) = 0;
+    virtual void initializeToReplaceRemoteFrame(WebRemoteFrame*, const WebString& name, WebSandboxFlags, const WebFrameOwnerProperties&) = 0;
 
     virtual void setAutofillClient(WebAutofillClient*) = 0;
     virtual WebAutofillClient* autofillClient() = 0;
     virtual void setDevToolsAgentClient(WebDevToolsAgentClient*) = 0;
     virtual WebDevToolsAgent* devToolsAgent() = 0;
 
+    // Basic properties ---------------------------------------------------
+
+    // Updates the scrolling and margin properties in the frame's FrameOwner.
+    // This is used when this frame's parent is in another process and it
+    // dynamically updates these properties.
+    // TODO(dcheng): Currently, the update only takes effect on next frame

[dcheng, 2015/10/21 21:04:01]

What's this TODO for? =)

[lazyboy, 2015/10/23 21:19:35]

This corresponds to the FIXMEs in 
https://codereview.chromium.org/1307013004/diff/520001/third_party/WebKit/Sou...

} else if (name == marginwidthAttr) {	 131     } else if (name ==
marginwidthAttr) {
 123         m_marginWidth = value.toInt();	 132        
setMarginWidth(value.toInt());
 124         // FIXME: If we are already attached, this has no effect.

, etc.
Maybe a TODO here is superfluous?

+    // navigation.  This matches the in-process frame behavior.
+    virtual void setFrameOwnerProperties(const WebFrameOwnerProperties&) = 0;
+
     // Navigation Ping --------------------------------------------------------
     virtual void sendPings(const WebNode& contextNode, const WebURL& destinationURL) = 0;