Enforce constant size and device scale factor for surfaces

content/browser/renderer_host/delegated_frame_host.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/renderer_host/delegated_frame_host.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 499 matching lines @@
                                          const gfx::Rect& damage_rect) {
   if (id != local_surface_id_)
     return;
   AttemptFrameSubscriberCapture(damage_rect);
 }
 
 void DelegatedFrameHost::OnBeginFrame(const cc::BeginFrameArgs& args) {
   client_->OnBeginFrame(args);
 }
 
+void DelegatedFrameHost::DidRejectCompositorFrame() {
+  NOTREACHED();
+}
+
 void DelegatedFrameHost::EvictDelegatedFrame() {
   if (!has_frame_)
     return;
   client_->DelegatedFrameHostGetLayer()->SetShowSolidColorContent();
   support_->EvictCurrentSurface();
   has_frame_ = false;
   resize_lock_.reset();
   frame_evictor_->DiscardedFrame();
   UpdateGutters();
 }
@@ skipping 332 matching lines @@
   }
 
   if (!skipped_frames_) {
     latest_confirmed_begin_frame_source_id_ = ack.source_id;
     latest_confirmed_begin_frame_sequence_number_ =
         ack.latest_confirmed_sequence_number;
   }
 }
 
 }  // namespace content