Use ui::EventFlagsToWebEventModifiers in WebContentsViewAura

src//c/b/wc/web_contents_view_aura.cc has its own function
to map ui::EventFlags to blink::WebInputEvent::Modifiers. It duplicates
the existing ui/events/blink/blink_event_util.h|cc.

Driven by CL that removes this duplication.

BUG=none

Change-Id: I8f5ed74bbfa93fab5cd9192cbaf720977eb731ba
Reviewed-on: https://chromium-review.googlesource.com/904402Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#534740}

content/browser/web_contents/web_contents_view_aura.cc

@@ -345,29 +345,6 @@ blink::WebDragOperationsMask ConvertToWeb(int drag_op) {
   return (blink::WebDragOperationsMask) web_drag_op;
 }
 
-int ConvertAuraEventFlagsToWebInputEventModifiers(int aura_event_flags) {
-  int web_input_event_modifiers = 0;
-  if (aura_event_flags & ui::EF_SHIFT_DOWN)
-    web_input_event_modifiers |= blink::WebInputEvent::kShiftKey;
-  if (aura_event_flags & ui::EF_CONTROL_DOWN)
-    web_input_event_modifiers |= blink::WebInputEvent::kControlKey;
-  if (aura_event_flags & ui::EF_ALT_DOWN)
-    web_input_event_modifiers |= blink::WebInputEvent::kAltKey;
-  if (aura_event_flags & ui::EF_COMMAND_DOWN)
-    web_input_event_modifiers |= blink::WebInputEvent::kMetaKey;
-  if (aura_event_flags & ui::EF_LEFT_MOUSE_BUTTON)
-    web_input_event_modifiers |= blink::WebInputEvent::kLeftButtonDown;
-  if (aura_event_flags & ui::EF_MIDDLE_MOUSE_BUTTON)
-    web_input_event_modifiers |= blink::WebInputEvent::kMiddleButtonDown;
-  if (aura_event_flags & ui::EF_RIGHT_MOUSE_BUTTON)
-    web_input_event_modifiers |= blink::WebInputEvent::kRightButtonDown;
-  if (aura_event_flags & ui::EF_BACK_MOUSE_BUTTON)
-    web_input_event_modifiers |= blink::WebInputEvent::kBackButtonDown;
-  if (aura_event_flags & ui::EF_FORWARD_MOUSE_BUTTON)
-    web_input_event_modifiers |= blink::WebInputEvent::kForwardButtonDown;
-  return web_input_event_modifiers;
-}
-
 GlobalRoutingID GetRenderViewHostID(RenderViewHost* rvh) {
   return GlobalRoutingID(rvh->GetProcess()->GetID(), rvh->GetRoutingID());
 }
@@ -1237,7 +1214,7 @@ void WebContentsViewAura::OnDragEntered(const ui::DropTargetEvent& event) {
   gfx::PointF screen_pt(display::Screen::GetScreen()->GetCursorScreenPoint());
   current_rwh_for_drag_->DragTargetDragEnter(
       *current_drop_data_, transformed_pt, screen_pt, op,
-      ConvertAuraEventFlagsToWebInputEventModifiers(event.flags()));
+      ui::EventFlagsToWebEventModifiers(event.flags()));
 
   if (drag_dest_delegate_) {
     drag_dest_delegate_->OnReceiveDragData(event.data());
@@ -1285,7 +1262,7 @@ int WebContentsViewAura::OnDragUpdated(const ui::DropTargetEvent& event) {
   blink::WebDragOperationsMask op = ConvertToWeb(event.source_operations());
   target_rwh->DragTargetDragOver(
       transformed_pt, screen_pt, op,
-      ConvertAuraEventFlagsToWebInputEventModifiers(event.flags()));
+      ui::EventFlagsToWebEventModifiers(event.flags()));
 
   if (drag_dest_delegate_)
     drag_dest_delegate_->OnDragOver();
@@ -1334,7 +1311,7 @@ int WebContentsViewAura::OnPerformDrop(const ui::DropTargetEvent& event) {
   target_rwh->DragTargetDrop(
       *current_drop_data_, transformed_pt,
       gfx::PointF(display::Screen::GetScreen()->GetCursorScreenPoint()),
-      ConvertAuraEventFlagsToWebInputEventModifiers(event.flags()));
+      ui::EventFlagsToWebEventModifiers(event.flags()));
   if (drag_dest_delegate_)
     drag_dest_delegate_->OnDrop();
   current_drop_data_.reset();