SurfaceAggregator should check whether output is secure when drawin

cc/trees/remote_channel_impl.cc

 // Copyright 2016 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 "cc/trees/remote_channel_impl.h"
 
 #include "base/bind_helpers.h"
 #include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
 #include "cc/animation/animation_events.h"
@@ skipping 289 matching lines @@
 bool RemoteChannelImpl::SupportsImplScrolling() const {
   return true;
 }
 
 void RemoteChannelImpl::UpdateTopControlsState(TopControlsState constraints,
                                                TopControlsState current,
                                                bool animate) {
   NOTREACHED() << "Should not be called on the remote client LayerTreeHost";
 }
 
-void RemoteChannelImpl::SetOutputIsSecure(bool output_is_secure) {
-  NOTREACHED() << "Only used by SingleProxyMain";
-}
-
 bool RemoteChannelImpl::MainFrameWillHappenForTesting() {
   DCHECK(task_runner_provider_->IsMainThread());
   bool main_frame_will_happen;
   {
     CompletionEvent completion;
     DebugScopedSetMainThreadBlocked main_thread_blocked(task_runner_provider_);
     ImplThreadTaskRunner()->PostTask(
         FROM_HERE,
         base::Bind(&ProxyImpl::MainFrameWillHappenOnImplForTesting,
                    proxy_impl_weak_ptr_, &completion, &main_frame_will_happen));
@@ skipping 209 matching lines @@
 
 RemoteChannelImpl::CompositorThreadOnly::CompositorThreadOnly(
     base::WeakPtr<RemoteChannelImpl> remote_channel_weak_ptr)
     : proxy_impl(nullptr),
       proxy_impl_weak_factory(nullptr),
       remote_channel_weak_ptr(remote_channel_weak_ptr) {}
 
 RemoteChannelImpl::CompositorThreadOnly::~CompositorThreadOnly() {}
 
 }  // namespace cc