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

content/browser/frame_host/render_widget_host_view_child_frame.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 33 matching lines @@
       ack_pending_count_(0),
       frame_connector_(nullptr),
       begin_frame_source_(nullptr),
       observing_begin_frame_source_(false),
       parent_surface_id_namespace_(0),
       weak_factory_(this) {
   id_allocator_ = CreateSurfaceIdAllocator();
   RegisterSurfaceNamespaceId();
 
   host_->SetView(this);
+
+  // This is necessary when this view is the top-level view, which is the case
+  // for inner WebContents.
+  text_input_manager_ = GetTextInputManager();

[EhsanK, 2016/05/13 16:00:56]

Actually, I am not sure if this is really necessary. 

 }
 
 RenderWidgetHostViewChildFrame::~RenderWidgetHostViewChildFrame() {
   if (!surface_id_.is_null())
     surface_factory_->Destroy(surface_id_);
 }
 
 void RenderWidgetHostViewChildFrame::SetCrossProcessFrameConnector(
     CrossProcessFrameConnector* frame_connector) {
   if (frame_connector_ == frame_connector)
@@ skipping 189 matching lines @@
   // RenderWidgetHostViewChildFrame which do not get a SetIsLoading() call.
   if (BrowserPluginGuestMode::UseCrossProcessFramesForGuests() &&
       BrowserPluginGuest::IsGuest(
           static_cast<RenderViewHostImpl*>(RenderViewHost::From(host_)))) {
     return;
   }
 
   NOTREACHED();
 }
 
-void RenderWidgetHostViewChildFrame::TextInputStateChanged(
-    const TextInputState& params) {
-  // TODO(kenrb): Implement.
-}
-
 void RenderWidgetHostViewChildFrame::RenderProcessGone(
     base::TerminationStatus status,
     int error_code) {
   if (frame_connector_)
     frame_connector_->RenderProcessGone();
   Destroy();
 }
 
 void RenderWidgetHostViewChildFrame::Destroy() {
   // SurfaceIdNamespaces registered with RenderWidgetHostInputEventRouter
@@ skipping 386 matching lines @@
 
 bool RenderWidgetHostViewChildFrame::IsChildFrameForTesting() const {
   return true;
 }
 
 cc::SurfaceId RenderWidgetHostViewChildFrame::SurfaceIdForTesting() const {
   return surface_id_;
 };
 
 }  // namespace content