[reland] Browser Side Text Input State Tracking for OOPIF (Aura Only)

content/browser/frame_host/interstitial_page_impl.cc

Index: content/browser/frame_host/interstitial_page_impl.cc
diff --git a/content/browser/frame_host/interstitial_page_impl.cc b/content/browser/frame_host/interstitial_page_impl.cc
index 25a218fbd14b5837d606350c830643e8dcb7ed38..e0642a51bb782ea2277344e7ca176b63c10ecd64 100644
--- a/content/browser/frame_host/interstitial_page_impl.cc
+++ b/content/browser/frame_host/interstitial_page_impl.cc
@@ -29,6 +29,7 @@
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
+#include "content/browser/renderer_host/text_input_manager.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/browser/web_contents/web_contents_view.h"
@@ -931,4 +932,18 @@ void InterstitialPageImpl::UnderlyingContentObserver::WebContentsDestroyed() {
   interstitial_->OnNavigatingAwayOrTabClosing();
 }
 
+TextInputManager* InterstitialPageImpl::GetTextInputManager() {
+  if (GetWebContents()) {
+    if (text_input_manager_)
+      text_input_manager_.reset(nullptr);
+
+    return static_cast<WebContentsImpl*>(web_contents_)->GetTextInputManager();
+  }
+
+  if (!text_input_manager_)
+    text_input_manager_.reset(new TextInputManager());
+
+  return text_input_manager_.get();
+}
+
 }  // namespace content