Revert "cc: Make tiling interest rect calc based on viewport."

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 579ee33af6cf888588cdfe22a4046e559f0ed823..38d387d0258536f497f69e10a7dd0b2aef00e949 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -357,6 +357,15 @@ 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(