cros: Bind password echo with TouchView mode

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 052e416edc16625d2124eea434a349cd12d68c35..02ccd44dc51916387ac7b9dae675cfebf2849a5c 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -208,6 +208,7 @@
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/system/input_device_settings.h"
+#include "chrome/browser/chromeos/ui/password_echo_controller.h"
 #include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chromeos/chromeos_switches.h"
@@ -2402,6 +2403,12 @@ void ChromeContentBrowserClient::OverrideWebkitPrefs(
 #if defined(OS_ANDROID)
   web_prefs->password_echo_enabled =
       prefs->GetBoolean(prefs::kWebKitPasswordEchoEnabled);
+#elif defined(OS_CHROMEOS)
+  // PasswordEchoController is null for mash and unit tests.
+  web_prefs->password_echo_enabled =
+      chromeos::PasswordEchoController::Get()
+          ? chromeos::PasswordEchoController::Get()->enabled()
+          : browser_defaults::kPasswordEchoEnabled;
 #else
   web_prefs->password_echo_enabled = browser_defaults::kPasswordEchoEnabled;
 #endif