Implement layoutTestController.display() method....

webkit/glue/webframe_impl.cc

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1547 matching lines @@
     GraphicsContext gc(canvas);
     WebCore::LocalCurrentGraphicsContext localContext(&gc);
 #elif WEBKIT_USING_SKIA
     PlatformContextSkia context(canvas);
 
     // PlatformGraphicsContext is actually a pointer to PlatformContextSkia
     GraphicsContext gc(reinterpret_cast<PlatformGraphicsContext*>(&context));
 #else
     NOTIMPLEMENTED();
 #endif
+    gc.save();
     if (frame_->document() && frameview()) {
+      gc.clip(dirty_rect);
       frameview()->paint(&gc, dirty_rect);
       frame_->page()->inspectorController()->drawNodeHighlight(gc);
     } else {
       gc.fillRect(dirty_rect, Color::white);
     }
+    gc.restore();
   }
 }
 
 void WebFrameImpl::CreateFrameView() {
   ASSERT(frame_);  // If frame_ doesn't exist, we probably didn't init properly.
 
   WebCore::Page* page = frame_->page();
   DCHECK(page);
 
   DCHECK(page->mainFrame() != NULL);
@@ skipping 289 matching lines @@
 
   SecurityOrigin* security_origin = frame_->document()->securityOrigin();
 
   if (!frame_->loader()->isScheduledLocationChangePending()) {
     frame_->loader()->stopAllLoaders();
     frame_->loader()->begin(frame_->loader()->url(), true, security_origin);
     frame_->loader()->write(script_result);
     frame_->loader()->end();
   }
 }