Remove old history UI, and replace with history2.

chrome/common/url_constants.cc

Index: chrome/common/url_constants.cc
diff --git a/chrome/common/url_constants.cc b/chrome/common/url_constants.cc
index 1a742bae542b7499469d12064019f7b2d10ad81c..4cee168784aebd88075b1f9bde158169f860b27c 100644
--- a/chrome/common/url_constants.cc
+++ b/chrome/common/url_constants.cc
@@ -47,7 +47,6 @@ const char kChromeUIGpuCleanURL[] = "chrome://gpuclean";
 const char kChromeUIGpuCrashURL[] = "chrome://gpucrash";
 const char kChromeUIGpuHangURL[] = "chrome://gpuhang";
 const char kChromeUIHangURL[] = "chrome://hang/";
-const char kChromeUIHistory2URL[] = "chrome://history2/";
 const char kChromeUIHistoryURL[] = "chrome://history/";
 const char kChromeUIHungRendererDialogURL[] = "chrome://hung-renderer/";
 const char kChromeUIInputWindowDialogURL[] = "chrome://input-window-dialog/";
@@ -148,7 +147,6 @@ const char kChromeUIGpuHost[] = "gpu";
 const char kChromeUIGpuInternalsHost[] = "gpu-internals";
 const char kChromeUIHangHost[] = "hang";
 const char kChromeUIHistogramsHost[] = "histograms";
-const char kChromeUIHistory2Host[] = "history2";
 const char kChromeUIHistoryHost[] = "history";
 const char kChromeUIHungRendererDialogHost[] = "hung-renderer";
 const char kChromeUIInputWindowDialogHost[] = "input-window-dialog";