Prepare SyntheticPointerAction to handle touch actions for multiple fingers

content/browser/renderer_host/input/synthetic_pointer_action.h

Index: content/browser/renderer_host/input/synthetic_pointer_action.h
diff --git a/content/browser/renderer_host/input/synthetic_pointer_action.h b/content/browser/renderer_host/input/synthetic_pointer_action.h
index 23b23fa421be29b1254cd491eebcbaff13adbb06..dd03d995e73316bb54b87a0c033f806cd24673eb 100644
--- a/content/browser/renderer_host/input/synthetic_pointer_action.h
+++ b/content/browser/renderer_host/input/synthetic_pointer_action.h
@@ -17,20 +17,29 @@ namespace content {
 class CONTENT_EXPORT SyntheticPointerAction : public SyntheticGesture {
  public:
   explicit SyntheticPointerAction(const SyntheticPointerActionParams& params);
-  SyntheticPointerAction(const SyntheticPointerActionParams& params,
-                         SyntheticPointer* synthetic_pointer);
+  SyntheticPointerAction(
+      const std::vector<SyntheticPointerActionParams>& param_list,
+      SyntheticPointer* synthetic_pointer,
+      std::vector<int>* index_map);
   ~SyntheticPointerAction() override;
 
   SyntheticGesture::Result ForwardInputEvents(
       const base::TimeTicks& timestamp,
       SyntheticGestureTarget* target) override;
 
-  void ForwardTouchOrMouseInputEvents(const base::TimeTicks& timestamp,
-                                      SyntheticGestureTarget* target);
+  SyntheticGesture::Result ForwardTouchOrMouseInputEvents(
+      const base::TimeTicks& timestamp,
+      SyntheticGestureTarget* target);
+
+  void SetSyntheticPointer(SyntheticPointer* synthetic_pointer) {
+    synthetic_pointer_ = synthetic_pointer;
+  }
 
  private:
-  SyntheticPointerActionParams params_;
+  std::vector<SyntheticPointerActionParams> param_list_;
   SyntheticPointer* synthetic_pointer_;

[tdresser, 2016/05/13 13:58:04]

Add a comment about the lifetimes of these objects, and who owns them.

[lanwei, 2016/05/19 16:04:13]

Done.

+  std::vector<int>* index_map_;
+  SyntheticPointerActionParams params_;
 
   DISALLOW_COPY_AND_ASSIGN(SyntheticPointerAction);
 };