Instrument BrowserGpuChannelHostFactory::EstablishRequest::FinishOnMain Codepaths to Find Jank

content/browser/gpu/browser_gpu_channel_host_factory.cc

 // Copyright (c) 2012 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/gpu/browser_gpu_channel_host_factory.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/profiler/scoped_tracker.h"
@@ skipping 402 matching lines @@
 
   return NULL;
 }
 
 void BrowserGpuChannelHostFactory::GpuChannelEstablished() {
   DCHECK(IsMainThread());
   DCHECK(pending_request_.get());
   if (pending_request_->channel_handle().name.empty()) {
     DCHECK(!gpu_channel_.get());
   } else {
+    // TODO(robliao): Remove ScopedTracker below once https://crbug.com/466866
+    // is fixed.
+    tracked_objects::ScopedTracker tracking_profile1(
+        FROM_HERE_WITH_EXPLICIT_FUNCTION(
+            "466866 BrowserGpuChannelHostFactory::GpuChannelEstablished1"));
     GetContentClient()->SetGpuInfo(pending_request_->gpu_info());
     gpu_channel_ =
         GpuChannelHost::Create(this,
                                pending_request_->gpu_info(),
                                pending_request_->channel_handle(),
                                shutdown_event_.get(),
                                BrowserGpuMemoryBufferManager::current());
   }
   gpu_host_id_ = pending_request_->gpu_host_id();
   pending_request_ = NULL;
 
+  // TODO(robliao): Remove ScopedTracker below once https://crbug.com/466866 is
+  // fixed.
+  tracked_objects::ScopedTracker tracking_profile2(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "466866 BrowserGpuChannelHostFactory::GpuChannelEstablished2"));
+
   for (size_t n = 0; n < established_callbacks_.size(); n++)
     established_callbacks_[n].Run();
 
   established_callbacks_.clear();
 }
 
 // static
 void BrowserGpuChannelHostFactory::AddFilterOnIO(
     int host_id,
     scoped_refptr<IPC::MessageFilter> filter) {
@@ skipping 98 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   CreateGpuMemoryBufferCallbackMap::iterator iter =
       create_gpu_memory_buffer_requests_.find(request_id);
   DCHECK(iter != create_gpu_memory_buffer_requests_.end());
   iter->second.Run(handle);
   create_gpu_memory_buffer_requests_.erase(iter);
 }
 
 }  // namespace content