A11y: Introduce High Contrast Mode and Screen Magnifier to ubar tray.

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 373f6ca4a5c3e09916c891c1c6a9d224f15f2f37..78d2a92fd6163cb30abbbfc4bfbd38183f70cf29 100644
--- a/chrome/common/url_constants.cc
+++ b/chrome/common/url_constants.cc
@@ -346,6 +346,11 @@ const char kChromeHelpViaWebUIURL[] =
     "https://support.google.com/chrome/?p=help&ctx=settings";
 #endif  // defined(OS_CHROMEOS)
 
+#if defined(OS_CHROMEOS)
+const char kChromeAccessibilityHelpURL[] =
+    "https://support.google.com/chromeos/?p=accessibility_menu";
+#endif  // defined(OS_CHROMEOS)
+
 const char kChromeSyncLearnMoreURL[] =
 #if defined(OS_CHROMEOS)
     "http://support.google.com/chromeos/bin/answer.py?answer=165139";