Add chrome://inducebrowsercrashforrealz to chrome://about

This debug url is used to crash the browser, but it is hard to find,
especially so since it is not listed among the urls that can be used
for debugging.

R=thakis@chromium.org

Review-Url: https://codereview.chromium.org/2738233003
Cr-Commit-Position: refs/heads/master@{#456077}

chrome/common/url_constants.cc

@@ -747,6 +747,7 @@ const char* const kChromeHostURLs[] = {
 const size_t kNumberOfChromeHostURLs = arraysize(kChromeHostURLs);
 
 const char* const kChromeDebugURLs[] = {content::kChromeUIBadCastCrashURL,
+                                        content::kChromeUIBrowserCrashURL,
                                         content::kChromeUICrashURL,
                                         content::kChromeUIDumpURL,
                                         content::kChromeUIKillURL,