Drop url_constants dependency in content/.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 50307688bc94ce16d37c6d05579e925b8b662733..74015d477a8db912ab16c1d8a753617bf83b88bc 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -112,6 +112,17 @@ void InitRenderViewHostForExtensions(RenderViewHost* render_view_host) {
 
 namespace chrome {
 
+ChromeContentBrowserClient::ChromeContentBrowserClient() {
+  // We treat about:kill, about:hang, and about:shorthang as the same site as
+  // any URL since they are actually modifiers on existing pages.
+  schemes_same_as_any_site_instance_.insert(chrome::kAboutKillURL);
+  schemes_same_as_any_site_instance_.insert(chrome::kAboutHangURL);
+  schemes_same_as_any_site_instance_.insert(chrome::kAboutShorthangURL);
+}
+
+ChromeContentBrowserClient::~ChromeContentBrowserClient() {
+}
+
 void ChromeContentBrowserClient::RenderViewHostCreated(
     RenderViewHost* render_view_host) {
   new ChromeRenderViewHostObserver(render_view_host);
@@ -170,6 +181,11 @@ GURL ChromeContentBrowserClient::GetEffectiveURL(Profile* profile,
   return extension->GetResourceURL(url.path());
 }
 
+const std::set<std::string>*
+ChromeContentBrowserClient::GetSchemesSameAsAnySiteInstance() {
+  return &schemes_same_as_any_site_instance_;
+}
+
 GURL ChromeContentBrowserClient::GetAlternateErrorPageURL(
     const TabContents* tab) {
   GURL url;