Correct missing radius in ui::TouchEvent.

content/browser/renderer_host/input/web_input_event_util_unittest.cc

Index: content/browser/renderer_host/input/web_input_event_util_unittest.cc
diff --git a/content/browser/renderer_host/input/web_input_event_util_unittest.cc b/content/browser/renderer_host/input/web_input_event_util_unittest.cc
index 2587863d42801bfad960de6e4423b5811b6cee57..6202029385a4c8bf87571c51d4b2d87bb4307373 100644
--- a/content/browser/renderer_host/input/web_input_event_util_unittest.cc
+++ b/content/browser/renderer_host/input/web_input_event_util_unittest.cc
@@ -103,4 +103,30 @@ TEST(WebInputEventUtilTest, ScrollUpdateConversion) {
   EXPECT_TRUE(web_event.data.scrollUpdate.previousUpdateInSequencePrevented);
 }
 
+TEST(WebInputEventUtilTest, RadiusOfZeroUsesOtherAxis) {
+  const float nonZeroMajorAxisLength = 36;
+  const float nonZeroMinorAxisLength = 80;
+
+  // Test zeroed minor axis.
+  ui::PointerProperties pointer(5, 10, 40);
+  pointer.touch_major = nonZeroMajorAxisLength;
+  pointer.touch_minor = 0;
+  MotionEventGeneric event(
+      MotionEvent::ACTION_DOWN, base::TimeTicks::Now(), pointer);
+
+  WebTouchEvent actual_event = CreateWebTouchEventFromMotionEvent(event, false);
+  EXPECT_EQ(nonZeroMajorAxisLength / 2, actual_event.touches[0].radiusX);
+  EXPECT_EQ(nonZeroMajorAxisLength / 2, actual_event.touches[0].radiusY);
+
+  // Test zeroed major axis.
+  pointer.touch_major = 0;
+  pointer.touch_minor = nonZeroMinorAxisLength;
+  MotionEventGeneric event2(MotionEvent::ACTION_DOWN, base::TimeTicks::Now(),
+                            pointer);
+  actual_event = CreateWebTouchEventFromMotionEvent(event2, false);
+
+  EXPECT_EQ(nonZeroMinorAxisLength / 2, actual_event.touches[0].radiusX);
+  EXPECT_EQ(nonZeroMinorAxisLength / 2, actual_event.touches[0].radiusY);
+}
+
 }  // namespace content