Correct missing radius in ui::TouchEvent.

content/browser/renderer_host/input/web_input_event_util_unittest.cc

 // Copyright 2014 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.
 
 // Needed on Windows to get |M_PI| from <cmath>.
 #ifdef _WIN32
 #define _USE_MATH_DEFINES
 #endif
 
 #include <cmath>
@@ skipping 85 matching lines @@
   EXPECT_EQ(gfx::ToFlooredInt(pos.x()), web_event.x);
   EXPECT_EQ(gfx::ToFlooredInt(pos.y()), web_event.y);
   EXPECT_EQ(gfx::ToFlooredInt(raw_pos.x()), web_event.globalX);
   EXPECT_EQ(gfx::ToFlooredInt(raw_pos.y()), web_event.globalY);
   EXPECT_EQ(blink::WebGestureDeviceTouchscreen, web_event.sourceDevice);
   EXPECT_EQ(delta.x(), web_event.data.scrollUpdate.deltaX);
   EXPECT_EQ(delta.y(), web_event.data.scrollUpdate.deltaY);
   EXPECT_TRUE(web_event.data.scrollUpdate.previousUpdateInSequencePrevented);
 }
 
+TEST(WebInputEventUtilTest, TouchMinorOfZeroUsesTouchMajor) {
+  const float nonZeroMajorAxisLength = 36;
+
+  // 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);
+}
+
 }  // namespace content