Make the virtual keyboard show up on the display with input focus.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 201c55f9918ac7cb657a633940d185d31abe21fa..311c95343847bbbf7db2b7516ed7136a52752971 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -313,8 +313,6 @@ void Shell::OnRootWindowAdded(WmWindow* root_window) {
 }
 
 void Shell::CreateKeyboard() {
-  // TODO(bshe): Primary root window controller may not be the controller to
-  // attach virtual keyboard. See http://crbug.com/303429
   InitKeyboard();
   GetPrimaryRootWindowController()->ActivateKeyboard(
       keyboard::KeyboardController::GetInstance());
@@ -844,9 +842,17 @@ void Shell::InitKeyboard() {
             keyboard::KeyboardController::GetInstance());
       }
     }
+#if defined(OS_CHROMEOS)

[oshima, 2016/11/08 17:26:05]

do you need this? (ash is technically chromeos)

[yhanada, 2016/11/14 22:48:47]

Yes, because the definition of |virtual_keyboard_controller_| is under
OS_CHROMEOS.

+    keyboard::KeyboardController::ResetInstance(
+        new keyboard::KeyboardController(
+            wm_shell_->delegate()->CreateKeyboardUI(),
+            virtual_keyboard_controller_.get()));
+#else
     keyboard::KeyboardController::ResetInstance(
         new keyboard::KeyboardController(
-            wm_shell_->delegate()->CreateKeyboardUI()));
+            wm_shell_->delegate()->CreateKeyboardUI(), nullptr));
+
+#endif
   }
 }