Makes sure the keyboard typing isn't blocked when InputMethod::OnFocus() is not correctly called.

ui/views/widget/desktop_aura/desktop_native_widget_aura.cc

Index: ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
diff --git a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
index 618d77449607e2a0d5878b299838f0acf951d633..9eb850ecb1a35b34f9cd2813d5baec233a561c61 100644
--- a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
+++ b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
@@ -18,6 +18,7 @@
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/ime/input_method.h"
+#include "ui/base/ime/input_method_log_collector.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/display.h"
@@ -369,8 +370,11 @@ void DesktopNativeWidgetAura::HandleActivationChanged(bool active) {
   native_widget_delegate_->OnNativeWidgetActivationChanged(active);
   aura::client::ActivationClient* activation_client =
       aura::client::GetActivationClient(host_->window());
-  if (!activation_client)
+  if (!activation_client) {
+    GetInputMethod()->GetLogCollector()->AddLog(
+        "Missing OnFocus call when activating due to no activation client.");
     return;
+  }
   if (active) {
     if (GetWidget()->HasFocusManager()) {
       // This function can be called before the focus manager has had a
@@ -387,6 +391,9 @@ void DesktopNativeWidgetAura::HandleActivationChanged(bool active) {
       // Refreshes the focus info to IMF in case that IMF cached the old info
       // about focused text input client when it was "inactive".
       GetInputMethod()->OnFocus();
+    } else {
+      GetInputMethod()->GetLogCollector()->AddLog(
+          "Missing OnFocus call when activating due to no focus manager.");
     }
   } else {
     // If we're not active we need to deactivate the corresponding