Change Page::m_mainFrame to be a Frame.

Source/bindings/v8/PageScriptDebugServer.cpp

Index: Source/bindings/v8/PageScriptDebugServer.cpp
diff --git a/Source/bindings/v8/PageScriptDebugServer.cpp b/Source/bindings/v8/PageScriptDebugServer.cpp
index 0461708ba3daf39390e52b319d994a1796448216..fe90a1e2a93aa0df3370bf6942b06d04d6f993d5 100644
--- a/Source/bindings/v8/PageScriptDebugServer.cpp
+++ b/Source/bindings/v8/PageScriptDebugServer.cpp
@@ -109,7 +109,8 @@ PageScriptDebugServer::~PageScriptDebugServer()
 
 void PageScriptDebugServer::addListener(ScriptDebugListener* listener, Page* page)
 {
-    ScriptController& scriptController = page->mainFrame()->script();
+    // FIXME: Broken for OOPI.

[abarth-chromium, 2014/06/15 00:33:11]

Rather than having a comment everywhere, can we add a function on page to
document this?

page->deprecatedLocalMainFrame()

?  Then we can grep for all the callers and drive them to zero.

[dcheng, 2014/06/15 02:58:33]

Done.

+    ScriptController& scriptController = toLocalFrame(page->mainFrame())->script();
     if (!scriptController.canExecuteScripts(NotAboutToExecuteScript))
         return;