auto merge of #619 : kmcallister/servo/script-redisplay, r=jdm

Stuff I found in the process of working on incremental layout.

src/components/main/layout/flow.rs

@@ -35,6 +35,7 @@ use layout::float_context::{FloatContext, Invalid, FloatType};
 
 use std::cell::Cell;
 use std::uint;
+use std::io::stderr;
 use geom::point::Point2D;
 use geom::rect::Rect;
 use gfx::display_list::DisplayList;
@@ -414,7 +415,7 @@ impl<'self> FlowContext {
         }
 
         s.push_str(self.debug_str());
-        println(s);
+        stderr().write_line(s);
 
         // FIXME: this should have a pure/const version?
         for self.each_child |child| {

src/components/script/html/hubbub_html_parser.rs

@@ -481,6 +481,9 @@ pub fn parse_html(url: Url,
                 debug!("received data");
                 parser.parse_chunk(data);
             }
+            Done(Err(*)) => {
+                fail!("Failed to load page URL %s", url.to_str());
+            }
             Done(*) => {
                 break;
             }

src/components/script/script_task.rs

@@ -16,7 +16,7 @@ use dom::window::Window;
 use layout_interface::{AddStylesheetMsg, DocumentDamage};
 use layout_interface::{DocumentDamageLevel, HitTestQuery, HitTestResponse, LayoutQuery};
 use layout_interface::{LayoutChan, MatchSelectorsDocumentDamage, QueryMsg, Reflow};
-use layout_interface::{ReflowDocumentDamage, ReflowForDisplay, ReflowForScriptQuery, ReflowGoal};
+use layout_interface::{ReflowDocumentDamage, ReflowForDisplay, ReflowGoal};
 use layout_interface::ReflowMsg;
 use layout_interface;
 use servo_msg::constellation_msg::{ConstellationChan, LoadUrlMsg, NavigationDirection};
@@ -321,7 +321,8 @@ impl ScriptTask {
                                  null(),
                                  &rval);
 
-            self.reflow(ReflowForScriptQuery)
+            // We don't know what the script changed, so for now we will do a total redisplay.
+            self.reflow_all(ReflowForDisplay)
         }
     }