cc: Remove ThreadProxy dependency on LTHI::CurrentBeginFrameArgs

cc/trees/single_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/single_thread_proxy.h"
 
 #include "base/auto_reset.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/debug/benchmark_instrumentation.h"
@@ skipping 708 matching lines @@
 
 void SingleThreadProxy::WillBeginImplFrame(const BeginFrameArgs& args) {
 #if DCHECK_IS_ON()
   DCHECK(!inside_impl_frame_)
       << "WillBeginImplFrame called while already inside an impl frame!";
   inside_impl_frame_ = true;
 #endif
   layer_tree_host_impl_->WillBeginImplFrame(args);
 }
 
-void SingleThreadProxy::ScheduledActionSendBeginMainFrame() {
+void SingleThreadProxy::ScheduledActionSendBeginMainFrame(
+    const BeginFrameArgs& begin_frame_args) {
   TRACE_EVENT0("cc", "SingleThreadProxy::ScheduledActionSendBeginMainFrame");
   // Although this proxy is single-threaded, it's problematic to synchronously
   // have BeginMainFrame happen after ScheduledActionSendBeginMainFrame.  This
   // could cause a commit to occur in between a series of SetNeedsCommit calls
   // (i.e. property modifications) causing some to fall on one frame and some to
   // fall on the next.  Doing it asynchronously instead matches the semantics of
   // ThreadProxy::SetNeedsCommit where SetNeedsCommit will not cause a
   // synchronous commit.
 #if DCHECK_IS_ON()
   DCHECK(inside_impl_frame_)
       << "BeginMainFrame should only be sent inside a BeginImplFrame";
 #endif
-  const BeginFrameArgs& begin_frame_args =
-      layer_tree_host_impl_->CurrentBeginFrameArgs();
 
   MainThreadTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&SingleThreadProxy::BeginMainFrame,
                             weak_factory_.GetWeakPtr(), begin_frame_args));
 }
 
 void SingleThreadProxy::SendBeginMainFrameNotExpectedSoon() {
   layer_tree_host_->BeginMainFrameNotExpectedSoon();
 }
 
@@ skipping 134 matching lines @@
       << "DidFinishImplFrame called while not inside an impl frame!";
   inside_impl_frame_ = false;
 #endif
 }
 
 void SingleThreadProxy::SendBeginFramesToChildren(const BeginFrameArgs& args) {
   layer_tree_host_->SendBeginFramesToChildren(args);
 }
 
 }  // namespace cc