Introducing WebCoalescedInputEvent and inclusion in content/common

content/renderer/input/input_handler_manager.cc

Index: content/renderer/input/input_handler_manager.cc
diff --git a/content/renderer/input/input_handler_manager.cc b/content/renderer/input/input_handler_manager.cc
index 0596ad773c97d143e59f9053d497bf472d3cde2b..80d948e2ee6a45439226017996cb517533af8072 100644
--- a/content/renderer/input/input_handler_manager.cc
+++ b/content/renderer/input/input_handler_manager.cc
@@ -201,12 +201,12 @@ void InputHandlerManager::ProcessRafAlignedInputOnMainThread(int routing_id) {
 
 void InputHandlerManager::HandleInputEvent(
     int routing_id,
-    ui::ScopedWebInputEvent input_event,
+    blink::ScopedWebCoalescedInputEvent input_event,
     const ui::LatencyInfo& latency_info,
     const InputEventAckStateCallback& callback) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   TRACE_EVENT1("input,benchmark,rail", "InputHandlerManager::HandleInputEvent",
-               "type", WebInputEvent::GetName(input_event->type));
+               "type", WebInputEvent::GetName(input_event->event().type));
 
   auto it = input_handlers_.find(routing_id);
   if (it == input_handlers_.end()) {
@@ -277,7 +277,7 @@ void InputHandlerManager::NeedsMainFrame(int routing_id) {
 
 void InputHandlerManager::DispatchNonBlockingEventToMainThread(
     int routing_id,
-    ui::ScopedWebInputEvent event,
+    blink::WebCoalescedInputEvent::ScopedWebInputEvent event,
     const ui::LatencyInfo& latency_info) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   client_->DispatchNonBlockingEventToMainThread(routing_id, std::move(event),