MacViews: Adds NativeWidgetMac and gets views target compiling on Mac.

ui/events/gestures/gesture_recognizer_impl_mac.cc

Index: ui/events/gestures/gesture_recognizer_impl_mac.cc
diff --git a/ui/events/gestures/gesture_recognizer_impl_mac.cc b/ui/events/gestures/gesture_recognizer_impl_mac.cc
new file mode 100644
index 0000000000000000000000000000000000000000..46dde02fad982e48cd38c96e3469f10a897fed79
--- /dev/null
+++ b/ui/events/gestures/gesture_recognizer_impl_mac.cc
@@ -0,0 +1,64 @@
+// 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/macros.h"
+#include "ui/events/gestures/gesture_recognizer.h"
+
+namespace ui {
+
+namespace {
+
+// Stub implementation of GestureRecognizer for Mac. Currently only serves to
+// provide a no-op implementation of TransferEventsTo().
+class GestureRecognizerImplMac : public GestureRecognizer {
+ public:
+  GestureRecognizerImplMac() {}
+  virtual ~GestureRecognizerImplMac() {}
+
+ private:
+  virtual Gestures* ProcessTouchEventForGesture(
+      const TouchEvent& event,
+      ui::EventResult result,
+      GestureConsumer* consumer) OVERRIDE {
+    return NULL;
+  }
+  virtual bool CleanupStateForConsumer(GestureConsumer* consumer) OVERRIDE {
+    return false;
+  }
+  virtual GestureConsumer* GetTouchLockedTarget(
+      const TouchEvent& event) OVERRIDE {
+    return NULL;
+  }
+  virtual GestureConsumer* GetTargetForGestureEvent(
+      const GestureEvent& event) OVERRIDE {
+    return NULL;
+  }
+  virtual GestureConsumer* GetTargetForLocation(const gfx::PointF& location,
+                                                int source_device_id) OVERRIDE {
+    return NULL;
+  }
+  virtual void TransferEventsTo(GestureConsumer* current_consumer,
+                                GestureConsumer* new_consumer) OVERRIDE {}
+  virtual bool GetLastTouchPointForTarget(GestureConsumer* consumer,
+                                          gfx::PointF* point) OVERRIDE {
+    return false;
+  }
+  virtual bool CancelActiveTouches(GestureConsumer* consumer) OVERRIDE {
+    return false;
+  }
+  virtual void AddGestureEventHelper(GestureEventHelper* helper) OVERRIDE {}
+  virtual void RemoveGestureEventHelper(GestureEventHelper* helper) OVERRIDE {}
+
+  DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImplMac);
+};
+
+}  // namespace
+
+// static
+GestureRecognizer* GestureRecognizer::Get() {
+  CR_DEFINE_STATIC_LOCAL(GestureRecognizerImplMac, instance, ());
+  return &instance;
+}
+
+}  // namespace ui