Add an histogram to differentiate between hang types of the renderer

content/browser/renderer_host/render_widget_host_unittest.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 <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <tuple>
 
@@ skipping 387 matching lines @@
   void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) override {
     unhandled_keyboard_event_type_ = event.type;
     unhandled_keyboard_event_called_ = true;
   }
 
   bool HandleWheelEvent(const blink::WebMouseWheelEvent& event) override {
     handle_wheel_event_called_ = true;
     return handle_wheel_event_;
   }
 
-  void RendererUnresponsive(RenderWidgetHostImpl* render_widget_host) override {
+  void RendererUnresponsive(RenderWidgetHostImpl* render_widget_host,
+                            RendererUnresponsiveType type) override {
     unresponsive_timer_fired_ = true;
   }
 
   void Cut() override {}
   void Copy() override {}
   void Paste() override {}
   void SelectAll() override {}
 
  private:
   bool prehandle_keyboard_event_;
@@ skipping 644 matching lines @@
   SendInputEventACK(WebInputEvent::GestureTwoFingerTap,
                     INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   EXPECT_EQ(WebInputEvent::GestureTwoFingerTap, view_->gesture_event_type());
   EXPECT_EQ(INPUT_EVENT_ACK_STATE_NOT_CONSUMED, view_->ack_result());
 }
 
 // Test that the hang monitor timer expires properly if a new timer is started
 // while one is in progress (see crbug.com/11007).
 TEST_F(RenderWidgetHostTest, DontPostponeHangMonitorTimeout) {
   // Start with a short timeout.
-  host_->StartHangMonitorTimeout(TimeDelta::FromMilliseconds(10));
+  host_->StartHangMonitorTimeout(
+      TimeDelta::FromMilliseconds(10),
+      RenderWidgetHostDelegate::RENDERER_UNRESPONSIVE_UNKNOWN);
 
   // Immediately try to add a long 30 second timeout.
   EXPECT_FALSE(delegate_->unresponsive_timer_fired());
-  host_->StartHangMonitorTimeout(TimeDelta::FromSeconds(30));
+  host_->StartHangMonitorTimeout(
+      TimeDelta::FromSeconds(30),
+      RenderWidgetHostDelegate::RENDERER_UNRESPONSIVE_UNKNOWN);
 
   // Wait long enough for first timeout and see if it fired.
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
       TimeDelta::FromMilliseconds(10));
   base::MessageLoop::current()->Run();
   EXPECT_TRUE(delegate_->unresponsive_timer_fired());
 }
 
 // Test that the hang monitor timer expires properly if it is started, stopped,
 // and then started again.
 TEST_F(RenderWidgetHostTest, StopAndStartHangMonitorTimeout) {
   // Start with a short timeout, then stop it.
-  host_->StartHangMonitorTimeout(TimeDelta::FromMilliseconds(10));
+  host_->StartHangMonitorTimeout(
+      TimeDelta::FromMilliseconds(10),
+      RenderWidgetHostDelegate::RENDERER_UNRESPONSIVE_UNKNOWN);
   host_->StopHangMonitorTimeout();
 
   // Start it again to ensure it still works.
   EXPECT_FALSE(delegate_->unresponsive_timer_fired());
-  host_->StartHangMonitorTimeout(TimeDelta::FromMilliseconds(10));
+  host_->StartHangMonitorTimeout(
+      TimeDelta::FromMilliseconds(10),
+      RenderWidgetHostDelegate::RENDERER_UNRESPONSIVE_UNKNOWN);
 
   // Wait long enough for first timeout and see if it fired.
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
       TimeDelta::FromMilliseconds(40));
   base::MessageLoop::current()->Run();
   EXPECT_TRUE(delegate_->unresponsive_timer_fired());
 }
 
 // Test that the hang monitor timer expires properly if it is started, then
 // updated to a shorter duration.
 TEST_F(RenderWidgetHostTest, ShorterDelayHangMonitorTimeout) {
   // Start with a timeout.
-  host_->StartHangMonitorTimeout(TimeDelta::FromMilliseconds(100));
+  host_->StartHangMonitorTimeout(
+      TimeDelta::FromMilliseconds(100),
+      RenderWidgetHostDelegate::RENDERER_UNRESPONSIVE_UNKNOWN);
 
   // Start it again with shorter delay.
   EXPECT_FALSE(delegate_->unresponsive_timer_fired());
-  host_->StartHangMonitorTimeout(TimeDelta::FromMilliseconds(20));
+  host_->StartHangMonitorTimeout(
+      TimeDelta::FromMilliseconds(20),
+      RenderWidgetHostDelegate::RENDERER_UNRESPONSIVE_UNKNOWN);
 
   // Wait long enough for the second timeout and see if it fired.
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
       TimeDelta::FromMilliseconds(25));
   base::MessageLoop::current()->Run();
   EXPECT_TRUE(delegate_->unresponsive_timer_fired());
 }
 
 // Test that the hang monitor timer is effectively disabled when the widget is
@@ skipping 549 matching lines @@
                                       ui::LatencyInfo());
 
 
   // Tests RWHI::ForwardWheelEventWithLatencyInfo().
   SimulateWheelEventWithLatencyInfo(-5, 0, 0, true, ui::LatencyInfo());
 
   ASSERT_FALSE(host_->input_router()->HasPendingEvents());
 }
 
 }  // namespace content