cc: Add main frame timing info to frame timing tracker.

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 348 matching lines @@
                "ThreadProxy::DidSwapBuffersCompleteOnImplThread");
   DCHECK(IsImplThread());
   impl().scheduler->DidSwapBuffersComplete();
   Proxy::MainThreadTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&ThreadProxy::DidCompleteSwapBuffers, main_thread_weak_ptr_));
 }
 
 void ThreadProxy::WillBeginImplFrame(const BeginFrameArgs& args) {
   impl().layer_tree_host_impl->WillBeginImplFrame(args);
+  if (impl().last_processed_begin_main_frame_args.IsValid()) {
+    // Last processed begin main frame args records the frame args that we sent
+    // to the main thread for the last frame that we've processed. If that is
+    // set, that means the current frame is one past the frame in which we've
+    // finished the processing.
+    impl().layer_tree_host_impl->RecordMainFrameTiming(
+        impl().last_processed_begin_main_frame_args,
+        impl().layer_tree_host_impl->CurrentBeginFrameArgs());
+    impl().last_processed_begin_main_frame_args = BeginFrameArgs();
+  }
 }
 
 void ThreadProxy::OnCanDrawStateChanged(bool can_draw) {
   TRACE_EVENT1(
       "cc", "ThreadProxy::OnCanDrawStateChanged", "can_draw", can_draw);
   DCHECK(IsImplThread());
   impl().scheduler->SetCanDraw(can_draw);
 }
 
 void ThreadProxy::NotifyReadyToActivate() {
@@ skipping 305 matching lines @@
 
   if (!impl().layer_tree_host_impl->settings().impl_side_painting) {
     DCHECK_GT(impl().layer_tree_host_impl->memory_allocation_limit_bytes(), 0u);
   }
   begin_main_frame_state->memory_allocation_limit_bytes =
       impl().layer_tree_host_impl->memory_allocation_limit_bytes();
   begin_main_frame_state->memory_allocation_priority_cutoff =
       impl().layer_tree_host_impl->memory_allocation_priority_cutoff();
   begin_main_frame_state->evicted_ui_resources =
       impl().layer_tree_host_impl->EvictedUIResourcesExist();
+  // TODO(vmpstr): This needs to be fixed if
+  // main_frame_before_activation_enabled is set, since we might run this code
+  // twice before recording a duration. crbug.com/469824
+  impl().last_begin_main_frame_args = begin_main_frame_state->begin_frame_args;
   Proxy::MainThreadTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&ThreadProxy::BeginMainFrame,
                  main_thread_weak_ptr_,
                  base::Passed(&begin_main_frame_state)));
   devtools_instrumentation::DidRequestMainThreadFrame(
       impl().layer_tree_host_id);
   impl().timing_history.DidBeginMainFrame();
 }
 
@@ skipping 224 matching lines @@
 
 void ThreadProxy::BeginMainFrameAbortedOnImplThread(
     CommitEarlyOutReason reason) {
   TRACE_EVENT1("cc", "ThreadProxy::BeginMainFrameAbortedOnImplThread", "reason",
                CommitEarlyOutReasonToString(reason));
   DCHECK(IsImplThread());
   DCHECK(impl().scheduler);
   DCHECK(impl().scheduler->CommitPending());
   DCHECK(!impl().layer_tree_host_impl->pending_tree());
 
-  if (CommitEarlyOutHandledCommit(reason))
+  if (CommitEarlyOutHandledCommit(reason)) {
     SetInputThrottledUntilCommitOnImplThread(false);
+    impl().last_processed_begin_main_frame_args =
+        impl().last_begin_main_frame_args;
+  }
   impl().layer_tree_host_impl->BeginMainFrameAborted(reason);
   impl().scheduler->BeginMainFrameAborted(reason);
 }
 
 void ThreadProxy::ScheduledActionAnimate() {
   TRACE_EVENT0("cc", "ThreadProxy::ScheduledActionAnimate");
   DCHECK(IsImplThread());
 
   // Don't animate if there is no root layer.
   // TODO(mithro): Both Animate and UpdateAnimationState already have a
@@ skipping 399 matching lines @@
 
   if (impl().completion_event_for_commit_held_on_tree_activation) {
     TRACE_EVENT_INSTANT0(
         "cc", "ReleaseCommitbyActivation", TRACE_EVENT_SCOPE_THREAD);
     DCHECK(impl().layer_tree_host_impl->settings().impl_side_painting);
     impl().completion_event_for_commit_held_on_tree_activation->Signal();
     impl().completion_event_for_commit_held_on_tree_activation = NULL;
   }
 
   impl().timing_history.DidActivateSyncTree();
+  impl().last_processed_begin_main_frame_args =
+      impl().last_begin_main_frame_args;
 }
 
 void ThreadProxy::DidPrepareTiles() {
   DCHECK(IsImplThread());
   impl().scheduler->DidPrepareTiles();
 }
 
 void ThreadProxy::DidCompletePageScaleAnimationOnImplThread() {
   DCHECK(IsImplThread());
   Proxy::MainThreadTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&ThreadProxy::DidCompletePageScaleAnimation,
                             main_thread_weak_ptr_));
 }
 
 }  // namespace cc