[NOT FOR REVIEW] [reland] Browser Side Text Input State Tracking for OOPIF (Aura Only)

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 45028e9c00cf69c8da56ce10e1d82ec9e5a6004a..849c3f1c4d9f8bb1244f8c655095c2623f20e01c 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2363,6 +2363,23 @@ void WebContentsImpl::SendScreenRects() {
     browser_plugin_embedder_->DidSendScreenRects();
 }
 
+TextInputManager* WebContentsImpl::GetTextInputManager() {
+  if (GetOuterWebContents()) {
+    if (text_input_manager_) {
+      // Since the outer WebContents exists, we should destroy
+      // |text_input_manager_| which will in turn notify all the
+      // RenderWidgetHostViews.
+      text_input_manager_.reset(nullptr);
+    }
+    return GetOuterWebContents()->GetTextInputManager();
+  }
+
+  if (!text_input_manager_)
+    text_input_manager_.reset(new TextInputManager());
+
+  return text_input_manager_.get();
+}
+
 BrowserAccessibilityManager*
     WebContentsImpl::GetRootBrowserAccessibilityManager() {
   RenderFrameHostImpl* rfh = GetMainFrame();