6 files changed, 64 insertions, 23 deletions
diff --git a/ui/events/BUILD.gn b/ui/events/BUILD.gn
index e2fe42b..652f9a4 100644
--- a/ui/events/BUILD.gn
+++ b/ui/events/BUILD.gn
@@ -109,6 +109,8 @@ component("events") {
     "gestures/gesture_sequence.cc",
     "gestures/gesture_sequence.h",
     "gestures/gesture_types.h",
+    "gestures/unified_gesture_detector_enabled.cc",
+    "gestures/unified_gesture_detector_enabled.h",
     "gestures/velocity_calculator.cc",
     "gestures/velocity_calculator.h",
     "platform/x11/x11_event_source.cc",
diff --git a/ui/events/event.h b/ui/events/event.h
index dfd867e..928a2b9 100644
--- a/ui/events/event.h
+++ b/ui/events/event.h
@@ -248,13 +248,16 @@ class EVENTS_EXPORT LocatedEvent : public Event {
   // TODO(tdresser): Always return floating point location. See
   // crbug.com/337824.
   gfx::Point location() const { return gfx::ToFlooredPoint(location_); }
-  gfx::PointF location_f() const { return location_; }
+  const gfx::PointF& location_f() const { return location_; }
   void set_root_location(const gfx::PointF& root_location) {
     root_location_ = root_location;
   }
   gfx::Point root_location() const {
     return gfx::ToFlooredPoint(root_location_);
   }
+  const gfx::PointF& root_location_f() const {
+    return root_location_;
+  }
 
   // Transform the locations using |inverted_root_transform|.
   // This is applied to both |location_| and |root_location_|.
diff --git a/ui/events/events.gyp b/ui/events/events.gyp
index 111e17c..890708d 100644
--- a/ui/events/events.gyp
+++ b/ui/events/events.gyp
@@ -123,6 +123,8 @@
         'gestures/gesture_types.h',
         'gestures/motion_event_aura.cc',
         'gestures/motion_event_aura.h',
+        'gestures/unified_gesture_detector_enabled.cc',
+        'gestures/unified_gesture_detector_enabled.h',
         'gestures/velocity_calculator.cc',
         'gestures/velocity_calculator.h',
         'ozone/events_ozone.cc',
diff --git a/ui/events/gestures/gesture_recognizer_impl.cc b/ui/events/gestures/gesture_recognizer_impl.cc
index bf0dd44..e145334 100644
--- a/ui/events/gestures/gesture_recognizer_impl.cc
+++ b/ui/events/gestures/gesture_recognizer_impl.cc
@@ -18,6 +18,7 @@
 #include "ui/events/gestures/gesture_configuration.h"
 #include "ui/events/gestures/gesture_sequence.h"
 #include "ui/events/gestures/gesture_types.h"
+#include "ui/events/gestures/unified_gesture_detector_enabled.h"
 
 namespace ui {
 
@@ -69,28 +70,7 @@ GestureProviderAura* CreateGestureProvider(GestureProviderAuraClient* client) {
 // GestureRecognizerImpl, public:
 
 GestureRecognizerImpl::GestureRecognizerImpl() {
-  // Default to using the unified gesture detector.
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
-  const std::string unified_gd_enabled_switch =
-      command_line.HasSwitch(switches::kUnifiedGestureDetector) ?
-      command_line.GetSwitchValueASCII(switches::kUnifiedGestureDetector) :
-      switches::kUnifiedGestureDetectorAuto;
-
-  const bool kUseUnifiedGestureDetectorByDefault = true;
-  if (unified_gd_enabled_switch.empty() ||
-      unified_gd_enabled_switch == switches::kUnifiedGestureDetectorEnabled) {
-    use_unified_gesture_detector_ = true;
-  } else if (unified_gd_enabled_switch ==
-                 switches::kUnifiedGestureDetectorDisabled) {
-    use_unified_gesture_detector_ = false;
-  } else if (unified_gd_enabled_switch ==
-             switches::kUnifiedGestureDetectorAuto) {
-    use_unified_gesture_detector_ = kUseUnifiedGestureDetectorByDefault;
-  } else {
-    LOG(ERROR) << "Invalid --unified-gesture-detector option: "
-               << unified_gd_enabled_switch;
-    use_unified_gesture_detector_ = false;
-  }
+  use_unified_gesture_detector_ = IsUnifiedGestureDetectorEnabled();
 }
 
 GestureRecognizerImpl::~GestureRecognizerImpl() {
diff --git a/ui/events/gestures/unified_gesture_detector_enabled.cc b/ui/events/gestures/unified_gesture_detector_enabled.cc
new file mode 100644
index 0000000..cf221ff
--- /dev/null
+++ b/ui/events/gestures/unified_gesture_detector_enabled.cc
@@ -0,0 +1,37 @@
+// 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 "base/command_line.h"
+#include "base/logging.h"
+#include "ui/events/event_switches.h"
+#include "ui/events/gestures/unified_gesture_detector_enabled.h"
+
+namespace ui {
+
+bool IsUnifiedGestureDetectorEnabled() {
+  const bool kUseUnifiedGestureDetectorByDefault = true;
+
+  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  const std::string unified_gd_enabled_switch =
+      command_line.HasSwitch(switches::kUnifiedGestureDetector) ?
+      command_line.GetSwitchValueASCII(switches::kUnifiedGestureDetector) :
+      switches::kUnifiedGestureDetectorAuto;
+
+  if (unified_gd_enabled_switch.empty() ||
+      unified_gd_enabled_switch == switches::kUnifiedGestureDetectorEnabled) {
+    return true;
+  }
+
+  if (unified_gd_enabled_switch == switches::kUnifiedGestureDetectorDisabled)
+    return false;
+
+  if (unified_gd_enabled_switch == switches::kUnifiedGestureDetectorAuto)
+    return kUseUnifiedGestureDetectorByDefault;
+
+  LOG(ERROR) << "Invalid --unified-gesture-detector option: "
+             << unified_gd_enabled_switch;
+  return false;
+}
+
+}  // namespace ui
diff --git a/ui/events/gestures/unified_gesture_detector_enabled.h b/ui/events/gestures/unified_gesture_detector_enabled.h
new file mode 100644
index 0000000..18fdc26
--- /dev/null
+++ b/ui/events/gestures/unified_gesture_detector_enabled.h
@@ -0,0 +1,17 @@
+// 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.
+
+#ifndef UI_EVENTS_GESTURES_UNIFIED_GESTURE_DETECTOR_ENABLED_H_
+#define UI_EVENTS_GESTURES_UNIFIED_GESTURE_DETECTOR_ENABLED_H_
+
+#include "ui/events/events_export.h"
+
+namespace ui {
+
+// Returns true iff the unified gesture detector is enabled for Aura.
+EVENTS_EXPORT bool IsUnifiedGestureDetectorEnabled();
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_GESTURES_UNIFIED_GESTURE_DETECTOR_ENABLED_H_