Introducing WebCoalescedInputEvent and inclusion in content/common

content/renderer/input/main_thread_event_queue.cc

Index: content/renderer/input/main_thread_event_queue.cc
diff --git a/content/renderer/input/main_thread_event_queue.cc b/content/renderer/input/main_thread_event_queue.cc
index fe67fb2466804494a736e32a1b1aba62e2d960eb..ee8f10a3a55b61c8057b2026f0f7aa73680156eb 100644
--- a/content/renderer/input/main_thread_event_queue.cc
+++ b/content/renderer/input/main_thread_event_queue.cc
@@ -33,7 +33,7 @@ bool IsContinuousEvent(const std::unique_ptr<EventWithDispatchType>& event) {
 }  // namespace
 
 EventWithDispatchType::EventWithDispatchType(
-    ui::ScopedWebInputEvent event,
+    blink::WebScopedInputEvent event,
     const ui::LatencyInfo& latency,
     InputEventDispatchType dispatch_type)
     : ScopedWebInputEventWithLatencyInfo(std::move(event), latency),
@@ -83,7 +83,7 @@ MainThreadEventQueue::MainThreadEventQueue(
 MainThreadEventQueue::~MainThreadEventQueue() {}
 
 bool MainThreadEventQueue::HandleEvent(
-    ui::ScopedWebInputEvent event,
+    blink::WebScopedInputEvent event,
     const ui::LatencyInfo& latency,
     InputEventDispatchType original_dispatch_type,
     InputEventAckState ack_result) {