Remove annoying DCHECK in ShellUtil::MakeChromeDefault that triggers when running chrome.

BUG=NONE
TEST=NONE


Review URL: https://chromiumcodereview.appspot.com/10682006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@144466 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/installer/util/shell_util.cc b/chrome/installer/util/shell_util.cc
index dc08436..0250e5e 100644
--- a/chrome/installer/util/shell_util.cc
+++ b/chrome/installer/util/shell_util.cc
@@ -1153,7 +1153,6 @@
   // This process needs to be routed through the system's UI. Use
   // ShowMakeChromeDefaultSystemUI instead (below).
   if (!CanMakeChromeDefaultUnattended()) {
-    NOTREACHED();
     return false;
   }