Remove unused fields from //content.

content/browser/renderer_host/render_widget_host_view_aura.h

 // Copyright (c) 2012 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_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 564 matching lines @@
   // Indicates if there is onging composition text.
   bool has_composition_text_;
 
   // Whether return characters should be passed on to the RenderWidgetHostImpl.
   bool accept_return_character_;
 
   // Current tooltip text.
   base::string16 tooltip_;
 
   // The size and scale of the last software compositing frame that was swapped.
   gfx::Size last_swapped_software_frame_size_;

[ncarter (slow), 2016/04/14 17:37:36]

This is also a hapax. It can be deleted.

[Łukasz Anforowicz, 2016/04/14 19:34:48]

Done.

-  float last_swapped_software_frame_scale_factor_;
-
-  // If non-NULL we're in OnPaint() and this is the supplied canvas.
-  gfx::Canvas* paint_canvas_;
 
   // Used to record the last position of the mouse.
   // While the mouse is locked, they store the last known position just as mouse
   // lock was entered.
   // Relative to the upper-left corner of the view.
   gfx::Point unlocked_mouse_position_;
   // Relative to the upper-left corner of the screen.
   gfx::Point unlocked_global_mouse_position_;
   // Last cursor position relative to screen. Used to compute movementX/Y.
   gfx::Point global_mouse_position_;
@@ skipping 80 matching lines @@
   bool disable_input_event_router_for_testing_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAura> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_