Support multi-button press for synthetic mouse events

content/common/input/synthetic_pointer_action_params.cc

 // Copyright 2016 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/common/input/synthetic_pointer_action_params.h"
 
 namespace content {
 
 SyntheticPointerActionParams::SyntheticPointerActionParams()
-    : pointer_action_type_(PointerActionType::NOT_INITIALIZED), index_(0) {}
+    : pointer_action_type_(PointerActionType::NOT_INITIALIZED),
+      index_(0),
+      button_(Button::LEFT) {}
 
 SyntheticPointerActionParams::SyntheticPointerActionParams(
     PointerActionType action_type)
-    : pointer_action_type_(action_type), index_(0) {}
+    : pointer_action_type_(action_type), index_(0), button_(Button::LEFT) {}
 
 SyntheticPointerActionParams::~SyntheticPointerActionParams() {}
 
+// static
+unsigned SyntheticPointerActionParams::GetWebMouseEventModifier(
+    SyntheticPointerActionParams::Button button) {
+  switch (button) {
+    case SyntheticPointerActionParams::Button::LEFT:
+      return blink::WebMouseEvent::LeftButtonDown;
+    case SyntheticPointerActionParams::Button::MIDDLE:
+      return blink::WebMouseEvent::MiddleButtonDown;
+    case SyntheticPointerActionParams::Button::RIGHT:
+      return blink::WebMouseEvent::RightButtonDown;
+  }
+  NOTREACHED();
+  return blink::WebMouseEvent::NoModifiers;
+}
+
+// static
+blink::WebMouseEvent::Button
+SyntheticPointerActionParams::GetWebMouseEventButton(
+    SyntheticPointerActionParams::Button button) {
+  switch (button) {
+    case SyntheticPointerActionParams::Button::LEFT:
+      return blink::WebMouseEvent::Button::Left;
+    case SyntheticPointerActionParams::Button::MIDDLE:
+      return blink::WebMouseEvent::Button::Middle;
+    case SyntheticPointerActionParams::Button::RIGHT:
+      return blink::WebMouseEvent::Button::Right;
+  }
+  NOTREACHED();
+  return blink::WebMouseEvent::Button::NoButton;
+}
+
 }  // namespace content