Update from https://crrev.com/320343

cc/trees/thread_proxy.cc

 // Copyright 2011 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/thread_proxy.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 1234 matching lines @@
   return ResourceUpdateController::MaxPartialTextureUpdates();
 }
 
 ThreadProxy::BeginMainFrameAndCommitState::BeginMainFrameAndCommitState()
     : memory_allocation_limit_bytes(0),
       memory_allocation_priority_cutoff(0),
       evicted_ui_resources(false) {}
 
 ThreadProxy::BeginMainFrameAndCommitState::~BeginMainFrameAndCommitState() {}
 
-void ThreadProxy::AsValueInto(base::trace_event::TracedValue* state) const {
-  CompletionEvent completion;
-  {
-    DebugScopedSetMainThreadBlocked main_thread_blocked(
-        const_cast<ThreadProxy*>(this));
-    scoped_refptr<base::trace_event::TracedValue> state_refptr(state);
-    Proxy::ImplThreadTaskRunner()->PostTask(
-        FROM_HERE,
-        base::Bind(&ThreadProxy::AsValueOnImplThread,
-                   impl_thread_weak_ptr_,
-                   &completion,
-                   state_refptr));
-    completion.Wait();
-  }
-}
-
-void ThreadProxy::AsValueOnImplThread(
-    CompletionEvent* completion,
-    base::trace_event::TracedValue* state) const {
-  state->BeginDictionary("layer_tree_host_impl");
-  impl().layer_tree_host_impl->AsValueInto(state);
-  state->EndDictionary();
-  completion->Signal();
-}
-
 bool ThreadProxy::MainFrameWillHappenForTesting() {
   DCHECK(IsMainThread());
   CompletionEvent completion;
   bool main_frame_will_happen = false;
   {
     DebugScopedSetMainThreadBlocked main_thread_blocked(this);
     Proxy::ImplThreadTaskRunner()->PostTask(
         FROM_HERE,
         base::Bind(&ThreadProxy::MainFrameWillHappenOnImplThreadForTesting,
                    impl_thread_weak_ptr_,
@@ skipping 98 matching lines @@
 }
 
 void ThreadProxy::DidCompletePageScaleAnimationOnImplThread() {
   DCHECK(IsImplThread());
   Proxy::MainThreadTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&ThreadProxy::DidCompletePageScaleAnimation,
                             main_thread_weak_ptr_));
 }
 
 }  // namespace cc