Fix a crash occuring during the destruction of TextInputManager on Android.

content/browser/renderer_host/text_input_manager.cc

Index: content/browser/renderer_host/text_input_manager.cc
diff --git a/content/browser/renderer_host/text_input_manager.cc b/content/browser/renderer_host/text_input_manager.cc
index 746e91073068a70bba5f9965ac95399fa72037e9..16897f88438e018a4733f8098d6514b92e29cb35 100644
--- a/content/browser/renderer_host/text_input_manager.cc
+++ b/content/browser/renderer_host/text_input_manager.cc
@@ -60,12 +60,8 @@ RenderWidgetHostImpl* TextInputManager::GetActiveWidget() const {
                         : nullptr;
 }
 
-const TextInputState* TextInputManager::GetTextInputState(
-    RenderWidgetHostViewBase* view) const {
-  DCHECK(!view || IsRegistered(view));
-  if (!view)
-    view = active_view_;
-  return !!view ? &text_input_state_map_.at(view) : nullptr;
+const TextInputState* TextInputManager::GetTextInputState() const {
+  return !!active_view_ ? &text_input_state_map_.at(active_view_) : nullptr;
 }
 
 const TextInputManager::SelectionRegion* TextInputManager::GetSelectionRegion(