Test for BrowserPlugin-based WebView Focus

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 27 matching lines @@
 
 namespace content {
 
 RenderWidgetHostViewChildFrame::RenderWidgetHostViewChildFrame(
     RenderWidgetHost* widget_host)
     : host_(RenderWidgetHostImpl::From(widget_host)),
       next_surface_sequence_(1u),
       last_output_surface_id_(0),
       current_surface_scale_factor_(1.f),
       ack_pending_count_(0),
+      frame_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);
 }
@@ skipping 287 matching lines @@
   // forward GestureScrollUpdate.
   if (frame_connector_ &&
       event.type == blink::WebInputEvent::GestureScrollUpdate && not_consumed)
     frame_connector_->BubbleScrollEvent(event);
 }
 
 void RenderWidgetHostViewChildFrame::SurfaceDrawn(uint32_t output_surface_id,
                                                   cc::SurfaceDrawStatus drawn) {
   cc::CompositorFrameAck ack;
   DCHECK_GT(ack_pending_count_, 0U);
+
+  frame_count_++;

[kenrb, 2016/07/05 14:30:56]

Should this be reset to zero when a new surface is created? I think this could
use a comment in the header describing what it is, and it doesn't affect your
current tests in any way, but it feels like clearing it for each surface would
be more intuitive for potential future uses of this count.

[wjmaclean, 2016/07/05 15:04:22]

Done.

+
   if (!surface_returned_resources_.empty())
     ack.resources.swap(surface_returned_resources_);
   if (host_) {
     host_->Send(new ViewMsg_SwapCompositorFrameAck(host_->GetRoutingID(),
                                                    output_surface_id, ack));
   }
   ack_pending_count_--;
 }
 
 void RenderWidgetHostViewChildFrame::OnSwapCompositorFrame(
@@ skipping 323 matching lines @@
 
 bool RenderWidgetHostViewChildFrame::IsChildFrameForTesting() const {
   return true;
 }
 
 cc::SurfaceId RenderWidgetHostViewChildFrame::SurfaceIdForTesting() const {
   return surface_id_;
 };
 
 }  // namespace content