Handle floating point coordinates from ozone to exosphere

ui/events/cocoa/events_mac.mm

 // 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.
 
 #include "ui/events/event_utils.h"
 
 #include <Cocoa/Cocoa.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 72 matching lines @@
   int64_t seconds = since_system_startup;
   since_system_startup -= seconds;
   int64_t microseconds = since_system_startup * 1000000;
   base::TimeTicks timestamp = ui::EventTimeStampFromSeconds(seconds) +
          base::TimeDelta::FromMicroseconds(microseconds);
   ValidateEventTimeClock(&timestamp);
   return timestamp;
 }
 
 gfx::Point EventLocationFromNative(const base::NativeEvent& native_event) {
+  return gfx::ToFlooredPoint(EventLocationFromNativeF(native_event));
+}
+
+gfx::PointF EventLocationFromNativeF(const base::NativeEvent& native_event) {
   NSWindow* window = [native_event window];
   if (!window) {
     NOTIMPLEMENTED();  // Point will be in screen coordinates.
-    return gfx::Point();
+    return gfx::PointF();
   }
   NSPoint location = [native_event locationInWindow];
   NSRect content_rect = [window contentRectForFrameRect:[window frame]];
-  return gfx::Point(location.x, NSHeight(content_rect) - location.y);
+  return gfx::PointF(location.x, NSHeight(content_rect) - location.y);
 }
 
 gfx::Point EventSystemLocationFromNative(
     const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
   return gfx::Point();
 }
 
 int EventButtonFromNative(const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
@@ skipping 188 matching lines @@
   uint16_t return_value;
   [text getCharacters:&return_value];
   return return_value;
 }
 
 bool IsCharFromNative(const base::NativeEvent& native_event) {
   return false;
 }
 
 }  // namespace ui