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

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 81e794383f494de5966a3f87e7b6b4a05983c1bb..be9dee36d9c05b400835d9063572f0a0db4dddf9 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -21,6 +21,7 @@
 #include "content/browser/compositor/image_transport_factory.h"
 #include "content/browser/compositor/owned_mailbox.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
+#include "content/browser/renderer_host/touch_selection_controller_aura.h"
 #include "content/common/content_export.h"
 #include "content/common/cursors/webcursor.h"
 #include "third_party/skia/include/core/SkRegion.h"
@@ -86,50 +87,9 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
       public aura::client::ActivationChangeObserver,
       public aura::client::FocusChangeObserver,
       public aura::client::CursorClientObserver,
-      public base::SupportsWeakPtr<RenderWidgetHostViewAura> {
+      public base::SupportsWeakPtr<RenderWidgetHostViewAura>,
+      public TouchSelectionControllerAuraClient {
  public:
-  // Displays and controls touch editing elements such as selection handles.
-  class TouchEditingClient {
-   public:
-    TouchEditingClient() {}
-
-    // Tells the client to start showing touch editing handles.
-    virtual void StartTouchEditing() = 0;
-
-    // Notifies the client that touch editing is no longer needed. |quick|
-    // determines whether the handles should fade out quickly or slowly.
-    virtual void EndTouchEditing(bool quick) = 0;
-
-    // Notifies the client that the selection bounds need to be updated.
-    virtual void OnSelectionOrCursorChanged(const gfx::Rect& anchor,
-                                            const gfx::Rect& focus) = 0;
-
-    // Notifies the client that the current text input type as changed.
-    virtual void OnTextInputTypeChanged(ui::TextInputType type) = 0;
-
-    // Notifies the client that an input event is about to be sent to the
-    // renderer. Returns true if the client wants to stop event propagation.
-    virtual bool HandleInputEvent(const ui::Event* event) = 0;
-
-    // Notifies the client that a gesture event ack was received.
-    virtual void GestureEventAck(int gesture_event_type) = 0;
-
-    // Notifies the client that the fling has ended, so it can activate touch
-    // editing if needed.
-    virtual void DidStopFlinging() = 0;
-
-    // This is called when the view is destroyed, so that the client can
-    // perform any necessary clean-up.
-    virtual void OnViewDestroyed() = 0;
-
-   protected:
-    virtual ~TouchEditingClient() {}
-  };
-
-  void set_touch_editing_client(TouchEditingClient* client) {
-    touch_editing_client_ = client;
-  }
-
   // When |is_guest_view_hack| is true, this view isn't really the view for
   // the |widget|, a RenderWidgetHostViewGuest is.
   //
@@ -298,6 +258,18 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   void OnTouchEvent(ui::TouchEvent* event) override;
   void OnGestureEvent(ui::GestureEvent* event) override;
 
+  // Overriden from TouchSelectionControllerAuraClient:
+  virtual float GetDeviceScaleFactor() override;
+  virtual void MoveCaret(const gfx::PointF& position) override;
+  virtual void MoveRangeSelectionExtent(const gfx::PointF& extent) override;
+  virtual void SelectBetweenCoordinates(const gfx::PointF& base,
+                                        const gfx::PointF& extent) override;
+  virtual aura::Window* GetParentWindow() override;
+  virtual bool IsCommandIdEnabled(int command_id) override;
+  virtual void ExecuteCommand(int command_id, int event_flags) override;
+  virtual void OpenContextMenu(const gfx::PointF& point) override;
+  virtual gfx::Rect ConvertRectToScreen(const gfx::RectF& rect) const override;
+
   // Overridden from aura::client::ActivationDelegate:
   bool ShouldActivate() const override;
 
@@ -346,6 +318,10 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
 
   void SnapToPhysicalPixelBoundary();
 
+  TouchSelectionControllerAura* selection_controller() {
+    return selection_controller_.get();
+  }
+
   OverscrollController* overscroll_controller() const {
     return overscroll_controller_.get();
   }
@@ -476,6 +452,10 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
 
   RenderFrameHostImpl* GetFocusedFrame();
 
+  // ...
+  void SelectionBoundsUpdated(const cc::ViewportSelectionBound& start,
+                              const cc::ViewportSelectionBound& end);
+
   // The model object.
   RenderWidgetHostImpl* host_;
 
@@ -525,10 +505,6 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   int text_input_flags_;
   bool can_compose_inline_;
 
-  // Rectangles for the selection anchor and focus.
-  gfx::Rect selection_anchor_rect_;
-  gfx::Rect selection_focus_rect_;
-
   // The current composition character bounds.
   std::vector<gfx::Rect> composition_character_bounds_;
 
@@ -597,7 +573,7 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
 
   bool has_snapped_to_boundary_;
 
-  TouchEditingClient* touch_editing_client_;
+  scoped_ptr<TouchSelectionControllerAura> selection_controller_;
 
   scoped_ptr<OverscrollController> overscroll_controller_;