[Remoting Android] Use floating point coords for rendering the cursor

remoting/client/gl_cursor.h

 // Copyright 2016 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 REMOTING_CLIENT_OPENGL_GL_CURSOR_H_
 #define REMOTING_CLIENT_OPENGL_GL_CURSOR_H_
 
 #include <array>
 #include <cstdint>
 #include <memory>
@@ skipping 12 matching lines @@
 // This class draws the cursor on the canvas.
 class GlCursor {
  public:
   GlCursor();
   ~GlCursor();
 
   void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape);
 
   // Sets the cursor hotspot positions. Does nothing if the cursor shape or the
   // canvas size has not been set.
-  void SetCursorPosition(int x, int y);
+  void SetCursorPosition(float x, float y);
 
   // Draw() will do nothing if cursor is not visible.
   void SetCursorVisible(bool visible);
 
   // Sets the canvas on which the cursor will be drawn. Resumes the current
   // state of the cursor to the context of the new canvas.
   // If |canvas| is nullptr, nothing will happen when calling Draw().
   void SetCanvas(GlCanvas* canvas);
 
   void Draw();
 
  private:
   void SetCurrentCursorShape(bool size_changed);
 
   bool visible_ = true;
 
   std::unique_ptr<GlRenderLayer> layer_;
 
   std::unique_ptr<uint8_t[]> current_cursor_data_;
   int current_cursor_data_size_ = 0;
   int current_cursor_width_ = 0;
   int current_cursor_height_ = 0;
   int current_cursor_hotspot_x_ = 0;
   int current_cursor_hotspot_y_ = 0;
 
-  int cursor_x_ = 0;
-  int cursor_y_ = 0;
+  float cursor_x_ = 0;
+  float cursor_y_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(GlCursor);
 };
 
 }  // namespace remoting
 #endif  // REMOTING_CLIENT_OPENGL_GL_CURSOR_H_