cc: Change max_tiles_for_interest_rect to be screen pixels padding.

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index a82089103490aee8c1f077445eec589746d245d8..52f32f009102a04de734c81901c6cdb4a64e4dc1 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -364,15 +364,6 @@ void RenderWidgetCompositor::Initialize() {
   settings.invert_viewport_scroll_order =
       cmd->HasSwitch(switches::kInvertViewportScrollOrder);
 
-  if (cmd->HasSwitch(cc::switches::kMaxTilesForInterestArea)) {
-    int max_tiles_for_interest_area;
-    if (GetSwitchValueAsInt(*cmd,
-                            cc::switches::kMaxTilesForInterestArea,
-                            1, std::numeric_limits<int>::max(),
-                            &max_tiles_for_interest_area))
-      settings.max_tiles_for_interest_area = max_tiles_for_interest_area;
-  }
-
   if (cmd->HasSwitch(cc::switches::kMaxUnusedResourceMemoryUsagePercentage)) {
     int max_unused_resource_memory_percentage;
     if (GetSwitchValueAsInt(