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

ui/aura/image_window_delegate.h

Index: ui/aura/image_window_delegate.h
diff --git a/content/browser/web_contents/aura/image_window_delegate.h b/ui/aura/image_window_delegate.h
similarity index 66%
rename from content/browser/web_contents/aura/image_window_delegate.h
rename to ui/aura/image_window_delegate.h
index a36110d40c25501d56c26122d1194eba5187f4c4..298756c6570b9a3f802f497ce51d583667d58696 100644
--- a/content/browser/web_contents/aura/image_window_delegate.h
+++ b/ui/aura/image_window_delegate.h
@@ -2,23 +2,32 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_BROWSER_WEB_CONTENTS_AURA_IMAGE_WINDOW_DELEGATE_H_
-#define CONTENT_BROWSER_WEB_CONTENTS_AURA_IMAGE_WINDOW_DELEGATE_H_
+#ifndef UI_AURA_IMAGE_WINDOW_DELEGATE_H_
+#define UI_AURA_IMAGE_WINDOW_DELEGATE_H_
 
-#include "content/common/content_export.h"
+#include "third_party/skia/include/core/SkColor.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/gfx/geometry/size.h"
+#include "ui/gfx/geometry/vector2d.h"
 #include "ui/gfx/image/image.h"
 
-namespace content {
+namespace aura {
 
-// An ImageWindowDelegate paints an image for a Window. The delegate destroys
-// itself when the Window is destroyed. The delegate does not consume any event.
-class CONTENT_EXPORT ImageWindowDelegate : public aura::WindowDelegate {
+// An ImageWindowDelegate paints an image for a Window, possibly also filling
+// the window with a specified backround color. By default the delegate destroys
+// itself when the Window is destroyed. Use |SetSelfDestroy| to override. The
+// delegate does not consume any event.
+class AURA_EXPORT ImageWindowDelegate : public aura::WindowDelegate {
  public:
   ImageWindowDelegate();
 
+  void SetBackgroundColor(SkColor color);
   void SetImage(const gfx::Image& image);
+  void SetImageOffset(gfx::Vector2d offset);
+
+  // Controls whether the delegate destroys itself when its window is destroyed.
+  void SetSelfDestroy(bool self_destroy);
+
   bool has_image() const { return !image_.IsEmpty(); }
 
  protected:
@@ -45,7 +54,11 @@ class CONTENT_EXPORT ImageWindowDelegate : public aura::WindowDelegate {
   void GetHitTestMask(gfx::Path* mask) const override;
 
  protected:
+  SkColor background_color_;
   gfx::Image image_;
+  gfx::Vector2d offset_;
+  bool self_destroy_;
+
   gfx::Size window_size_;
 
   // Keeps track of whether the window size matches the image size or not. If
@@ -56,6 +69,6 @@ class CONTENT_EXPORT ImageWindowDelegate : public aura::WindowDelegate {
   DISALLOW_COPY_AND_ASSIGN(ImageWindowDelegate);
 };
 
-}  // namespace content
+}  // namespace aura
 
-#endif  // CONTENT_BROWSER_WEB_CONTENTS_AURA_IMAGE_WINDOW_DELEGATE_H_
+#endif  // UI_AURA_IMAGE_WINDOW_DELEGATE_H_