Provide max gesture bounds and option to ignore touch size during pinch

ui/events/gesture_detection/gesture_provider.h

Index: ui/events/gesture_detection/gesture_provider.h
diff --git a/ui/events/gesture_detection/gesture_provider.h b/ui/events/gesture_detection/gesture_provider.h
index e9407c7e699d5803dc1238461b8c0dd91570d55f..84a926902946422c671839e371bc0905b271cab4 100644
--- a/ui/events/gesture_detection/gesture_provider.h
+++ b/ui/events/gesture_detection/gesture_provider.h
@@ -45,11 +45,12 @@ class GESTURE_DETECTION_EXPORT GestureProvider {
     // removed touch point. Defaults to false.
     bool gesture_begin_end_types_enabled;
 
-    // The minimum size (both length and width, in dips) of the generated
+    // The min and max size (both length and width, in dips) of the generated
     // bounding box for all gesture types. This is useful for touch streams
-    // that may report zero or unreasonably small touch sizes.
-    // Defaults to 0.
+    // that may report zero or unreasonably small or large touch sizes.
+    // Both values default to 0 (disabled).
     float min_gesture_bounds_length;
+    float max_gesture_bounds_length;
   };
 
   GestureProvider(const Config& config, GestureProviderClient* client);
@@ -129,6 +130,7 @@ class GESTURE_DETECTION_EXPORT GestureProvider {
   const bool gesture_begin_end_types_enabled_;
 
   const float min_gesture_bounds_length_;
+  const float max_gesture_bounds_length_;
 };
 
 }  //  namespace ui