Add a separate call to initialize the bounds for a sky <iframe> element.

sky/engine/core/loader/FrameLoaderClient.h

Index: sky/engine/core/loader/FrameLoaderClient.h
diff --git a/sky/engine/core/loader/FrameLoaderClient.h b/sky/engine/core/loader/FrameLoaderClient.h
index ebce8059db8a786a1cb78f9b81fdf69745896bb3..1ba7e994b658999d3247a51e04662fb2937bc83b 100644
--- a/sky/engine/core/loader/FrameLoaderClient.h
+++ b/sky/engine/core/loader/FrameLoaderClient.h
@@ -49,10 +49,12 @@ namespace blink {
     class FetchRequest;
     class FrameLoader;
     class FrameNetworkingContext;
+    class IntRect;
     class IntSize;
     class KURL;
     class LocalFrame;
     class Page;
+    class RemoteFrame;
     class ResourceError;
     class ResourceHandle;
     class ResourceRequest;
@@ -87,8 +89,7 @@ namespace blink {
 
         virtual void loadURLExternally(const ResourceRequest&, NavigationPolicy, const String& suggestedName = String()) = 0;
 
-        // TODO(mpcomplete): return surface ID?
-        virtual void createView(const KURL&) = 0;
+        virtual PassOwnPtr<RemoteFrame> createChildFrame(const KURL&) = 0;
 
         // Transmits the change in the set of watched CSS selectors property
         // that match any element on the frame.