Report user actions when gesture starts and stops in user_model.

content/renderer/render_thread_impl.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/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 717 matching lines @@
 
   InitSkiaEventTracer();
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       skia::SkiaMemoryDumpProvider::GetInstance(), "Skia", nullptr);
 
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   cc::SetClientNameForMetrics("Renderer");
 
+  if (!command_line.HasSwitch(switches::kSingleProcess)) {
+    action_callback_ = base::Bind(&RenderThreadImpl::RecordComputedAction,
+                                  base::Unretained(this));
+    base::AddActionCallback(action_callback_);
+  }
+
   is_threaded_animation_enabled_ =
       !command_line.HasSwitch(cc::switches::kDisableThreadedAnimation);
 
   is_zero_copy_enabled_ = command_line.HasSwitch(switches::kEnableZeroCopy);
   is_partial_raster_enabled_ =
       !command_line.HasSwitch(switches::kDisablePartialRaster);
   is_gpu_memory_buffer_compositor_resources_enabled_ = command_line.HasSwitch(
       switches::kEnableGpuMemoryBufferCompositorResources);
 
 #if defined(OS_MACOSX)
@@ skipping 101 matching lines @@
       mojo::GetProxy(&storage_partition_service_));
 }
 
 RenderThreadImpl::~RenderThreadImpl() {
 }
 
 void RenderThreadImpl::Shutdown() {
   FOR_EACH_OBSERVER(
       RenderProcessObserver, observers_, OnRenderProcessShutdown());
 
+  if (!action_callback_.is_null())
+    base::RemoveActionCallback(action_callback_);
+
   if (memory_observer_) {
     message_loop()->RemoveTaskObserver(memory_observer_.get());
     memory_observer_.reset();
   }
 
   // Wait for all databases to be closed.
   if (blink_platform_impl_) {
     // Crash the process if they fail to close after a generous amount of time.
     bool all_closed = blink_platform_impl_->web_database_observer_impl()
         ->WaitForAllDatabasesToClose(base::TimeDelta::FromSeconds(60));
@@ skipping 1305 matching lines @@
 }
 
 void RenderThreadImpl::PendingRenderFrameConnect::OnConnectionError() {
   size_t erased =
       RenderThreadImpl::current()->pending_render_frame_connects_.erase(
           routing_id_);
   DCHECK_EQ(1u, erased);
 }
 
 }  // namespace content