refactor: remove unused OffScreenRenderWidgetHostView fields (#38651)

* refactor: remove unused field OffScreenRenderWidgetHostView::last_time_

Co-authored-by: Charles Kerr <[email protected]>

* refactor: remove unused field OffScreenRenderWidgetHostView::last_scroll_offset_

Unused since 1a9e253

Co-authored-by: Charles Kerr <[email protected]>

* refactor: remove unused field OffScreenRenderWidgetHostView::paint_callback_running_

assigned to, but unread, since 81bf158

Co-authored-by: Charles Kerr <[email protected]>

---------

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Charles Kerr <[email protected]>

shell/browser/osr/osr_render_widget_host_view.cc

@@ -726,10 +726,8 @@ void OffScreenRenderWidgetHostView::CompositeFrame(
     }
   }
 
-  paint_callback_running_ = true;
   callback_.Run(gfx::IntersectRects(gfx::Rect(size_in_pixels), damage_rect),
                 frame);
-  paint_callback_running_ = false;
 
   ReleaseResize();
 }

shell/browser/osr/osr_render_widget_host_view.h

@@ -18,7 +18,6 @@
 
 #include "base/process/kill.h"
 #include "base/threading/thread.h"
-#include "base/time/time.h"
 #include "components/viz/common/quads/compositor_frame.h"
 #include "components/viz/common/surfaces/parent_local_surface_id_allocator.h"
 #include "content/browser/renderer_host/delegated_frame_host.h"  // nogncheck
@@ -258,9 +257,6 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   int frame_rate_ = 0;
   int frame_rate_threshold_us_ = 0;
 
-  base::Time last_time_ = base::Time::Now();
-
-  gfx::Vector2dF last_scroll_offset_;
   gfx::Size size_;
   bool painting_;
 
@@ -271,8 +267,6 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   bool hold_resize_ = false;
   bool pending_resize_ = false;
 
-  bool paint_callback_running_ = false;
-
   viz::LocalSurfaceId delegated_frame_host_surface_id_;
   viz::ParentLocalSurfaceIdAllocator delegated_frame_host_allocator_;