Add chrome.virtualKeyboardPrivate.setHotrodKeyboard API

chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc

Index: chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc
diff --git a/chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc b/chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc
index 61fc8090bda2744cc0f28ad9f0ce679c3bb80aca..332fe1f6ad02ecc2adf08938c8ee300dfc76f7a9 100644
--- a/chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc
+++ b/chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc
@@ -6,6 +6,7 @@
 
 #include <string>
 
+#include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/user_metrics_action.h"
@@ -58,6 +59,7 @@ bool ChromeVirtualKeyboardDelegate::GetKeyboardConfig(
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   results->SetString("layout", keyboard::GetKeyboardLayout());
   results->SetBoolean("a11ymode", keyboard::GetAccessibilityKeyboardEnabled());
+  results->SetBoolean("hotrodmode", keyboard::GetHotrodKeyboardEnabled());
   scoped_ptr<base::ListValue> features(new base::ListValue());
   features->AppendString(GenerateFeatureFlag(
       "floatingvirtualkeyboard", keyboard::IsFloatingVirtualKeyboardEnabled()));
@@ -102,6 +104,18 @@ bool ChromeVirtualKeyboardDelegate::OnKeyboardLoaded() {
   return true;
 }
 
+void ChromeVirtualKeyboardDelegate::SetHotrodKeyboard(bool enable) {
+  if (keyboard::GetHotrodKeyboardEnabled() == enable)
+    return;
+
+  keyboard::SetHotrodKeyboardEnabled(enable);
+  // This reloads virtual keyboard even if it exists. This ensures virtual
+  // keyboard gets the correct state of the hotrod keyboard through
+  // chrome.virtualKeyboardPrivate.getKeyboardConfig.
+  if (enable && keyboard::IsKeyboardEnabled())
+    ash::Shell::GetInstance()->CreateKeyboard();
+}
+
 bool ChromeVirtualKeyboardDelegate::LockKeyboard(bool state) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   keyboard::KeyboardController* controller =