Implement touch exploration touch typing

ash/ash_touch_exploration_manager_chromeos.cc

Index: ash/ash_touch_exploration_manager_chromeos.cc
diff --git a/ash/ash_touch_exploration_manager_chromeos.cc b/ash/ash_touch_exploration_manager_chromeos.cc
index c9ed8ac41cc1bfc801928343b082113e9702c0ca..09fc48d4576e8af9419a33a8a14dae45d8a68065 100644
--- a/ash/ash_touch_exploration_manager_chromeos.cc
+++ b/ash/ash_touch_exploration_manager_chromeos.cc
@@ -18,6 +18,7 @@
 #include "chromeos/chromeos_switches.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/chromeos/touch_exploration_controller.h"
+#include "ui/keyboard/keyboard_controller.h"
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
@@ -142,6 +143,15 @@ void AshTouchExplorationManager::SetTouchAccessibilityAnchorPoint(
   }
 }
 
+void AshTouchExplorationManager::OnKeyboardBoundsChanging(
+    const gfx::Rect& new_bounds) {
+  UpdateTouchExplorationState();
+}
+
+void AshTouchExplorationManager::OnKeyboardClosed() {
+  UpdateTouchExplorationState();
+}
+
 void AshTouchExplorationManager::UpdateTouchExplorationState() {
   // See crbug.com/603745 for more details.
   const bool pass_through_surface =
@@ -176,6 +186,17 @@ void AshTouchExplorationManager::UpdateTouchExplorationState() {
     } else {
       touch_exploration_controller_->SetExcludeBounds(gfx::Rect());
     }
+
+    // Virtual keyboard.
+    keyboard::KeyboardController* keyboard_controller =
+        keyboard::KeyboardController::GetInstance();
+    if (keyboard_controller) {
+      if (!keyboard_controller->HasObserver(this))
+        keyboard_controller->AddObserver(this);
+
+      touch_exploration_controller_->SetLiftActivationBounds(
+          keyboard_controller->current_keyboard_bounds());
+    }
   } else {
     touch_exploration_controller_.reset();
   }