SyntheticGestureTarget implementation for injecting synthetic input events

content/browser/renderer_host/input/synthetic_gesture_target_aura.h

+// Copyright 2013 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 CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_
+#define CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_
+
+#include "base/time/time.h"
+#include "content/browser/renderer_host/input/synthetic_gesture_target_base.h"
+#include "content/common/input/synthetic_gesture_params.h"
+
+namespace content {
+
+class InputEvent;
+class RenderWidgetHostViewAura;
+
+// SyntheticGestureTarget implementation for aura
+class SyntheticGestureTargetAura : public SyntheticGestureTargetBase {

[jdduke (slow), 2013/10/28 15:59:47]

Is it necessary for SyntheticGestureTarget{Aura,Android} to inherit from Base?
It looks like we override most of the functionality, in which case I think this
would all be simpler if we have SyntheticGestureTarget{Aura,Android,Default},
and they don't share any implementation details. 

[Dominik Grewe, 2013/10/28 16:14:31]

There is some common functionality: GetSyntheticGestureUpdateRate() and
OnSyntheticGestureCompleted(). But yes, it's limited.

+ public:
+  explicit SyntheticGestureTargetAura(RenderWidgetHostViewAura* render_view);
+
+  // SyntheticGestureTargetBase:
+  virtual void QueueWebTouchEventToPlatform(
+      const WebKit::WebTouchEvent& web_touch,
+      const ui::LatencyInfo& latency_info) OVERRIDE;
+
+  // SyntheticGestureTarget:
+  virtual SyntheticGestureParams::GestureSourceType
+      GetDefaultSyntheticGestureSourceType() const OVERRIDE;
+  virtual bool SupportsSyntheticGestureSourceType(
+      SyntheticGestureParams::GestureSourceType gesture_source_type) const
+      OVERRIDE;
+
+ private:
+  RenderWidgetHostViewAura* render_view_aura() {
+    return reinterpret_cast<RenderWidgetHostViewAura*>(render_view());
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(SyntheticGestureTargetAura);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_