Partial clone of the following CL: http://codereview.chromium.org/3013045/show

Differences from the above CL include the following:
 - RendererPreferences settings for ExtensionHosts are now extracted from the associated_tab_contents().  This ensures that extension hosts will also forward top level navigation requests.
 - Instead of explicitly setting the delegate on the TabContents in ExtensionHost::ShowCreatedWindow, instead I instruct the associated tab-contents to add the newly build tab-contents.  Note that this is the exact same behaviour performed by TabContents when initiating a top-level navigation to the host browser.  

Points of interest:
 - See the TODO in navigation_controller.cc.  This problem of an unrecognized navigation entry needs further investigation.
 - Also, I found that if the ActiveX control is navigated to a chrome-extension URL, then the top-level-navigation will fail because of the format of the URL.  The fix was to construct a temporary url in place of the chrome-extension url.

BUG=51091
TEST=None 

Review URL: http://codereview.chromium.org/3357013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@59142 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 3 insertions, 1 deletions

diff --git a/chrome/browser/extensions/extension_dom_ui.h b/chrome/browser/extensions/extension_dom_ui.h
index faa7836..a6c598f 100644
--- a/chrome/browser/extensions/extension_dom_ui.h
+++ b/chrome/browser/extensions/extension_dom_ui.h
@@ -48,7 +48,9 @@ class ExtensionDOMUI
   virtual Browser* GetBrowser() const;
   virtual gfx::NativeView GetNativeViewOfHost();
   virtual gfx::NativeWindow GetCustomFrameNativeWindow();
-  virtual TabContents* associated_tab_contents() { return tab_contents(); }
+  virtual TabContents* associated_tab_contents() const {
+    return tab_contents();
+  }
   virtual Profile* GetProfile();
 
   virtual ExtensionBookmarkManagerEventRouter*