Reland: Implement Aura side of unified touch text selection for contents

content/browser/renderer_host/touch_handle_drawable_aura.h

+// 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 CONTENT_BROWSER_RENDERER_HOST_TOUCH_HANDLE_DRAWABLE_AURA_H_
+#define CONTENT_BROWSER_RENDERER_HOST_TOUCH_HANDLE_DRAWABLE_AURA_H_
+
+#include "content/browser/renderer_host/input/touch_handle.h"
+#include "ui/aura/window_delegate.h"
+
+namespace content {
+
+class TouchHandleDrawableAura : public TouchHandleDrawable,
+                                public aura::WindowDelegate {
+ public:
+  explicit TouchHandleDrawableAura(aura::Window* parent);
+  virtual ~TouchHandleDrawableAura();
+
+ private:
+  // Overriden from TouchHandleDrawable.
+  virtual void SetEnabled(bool enabled) override;
+  virtual void SetOrientation(TouchHandleOrientation orientation) override;
+  virtual void SetAlpha(float alpha) override;
+  virtual void SetFocus(const gfx::PointF& position) override;
+  virtual bool IntersectsWith(const gfx::RectF& rect) const override;
+
+  // Overriden from aura::WindowDelegate.
+  virtual gfx::Size GetMinimumSize() const override;
+  virtual gfx::Size GetMaximumSize() const override;
+  virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
+                               const gfx::Rect& new_bounds) override;
+  virtual gfx::NativeCursor GetCursor(const gfx::Point& point) override;
+  virtual int GetNonClientComponent(const gfx::Point& point) const override;
+  virtual bool ShouldDescendIntoChildForEventHandling(
+      aura::Window* child,
+      const gfx::Point& location) override;
+  virtual bool CanFocus() override;
+  virtual void OnCaptureLost() override;
+  virtual void OnPaint(gfx::Canvas* canvas) override;
+  virtual void OnDeviceScaleFactorChanged(float device_scale_factor) override;
+  virtual void OnWindowDestroying(aura::Window* window) override;
+  virtual void OnWindowDestroyed(aura::Window* window) override;
+  virtual void OnWindowTargetVisibilityChanged(bool visible) override;
+  virtual bool HasHitTestMask() const override;
+  virtual void GetHitTestMask(gfx::Path* mask) const override;
+
+  scoped_ptr<aura::Window> window_;
+  bool enabled_;
+  float alpha_;
+
+  DISALLOW_COPY_AND_ASSIGN(TouchHandleDrawableAura);
+};
+
+}
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_TOUCH_HANDLE_DRAWABLE_AURA_H_