cc: Remove SetMemoryPolicy from OutputSurface and Display.

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 b548f9d2bcdb33fee5bbb03bae13c62ae2c948ac..d442d491422f5fdfbd4f8f6421a7440c1edb1d06 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -498,8 +498,14 @@ cc::LayerTreeSettings RenderWidgetCompositor::GenerateLayerTreeSettings(
   if (base::SysInfo::IsLowEndDevice())
     settings.max_staging_buffer_usage_in_bytes /= 4;
 
-  cc::ManagedMemoryPolicy current = settings.memory_policy_;
-  settings.memory_policy_ = GetGpuMemoryPolicy(current);
+  cc::ManagedMemoryPolicy defaults = settings.gpu_memory_policy;
+  settings.gpu_memory_policy = GetGpuMemoryPolicy(defaults);
+
+  // These limits inherited from CompositorOutputSurface without
+  // explanation.
+  settings.software_memory_policy = cc::ManagedMemoryPolicy(
+      128 * 1024 * 1024, gpu::MemoryAllocation::CUTOFF_ALLOW_NICE_TO_HAVE,
+      base::SharedMemory::GetHandleLimit() / 3);
 
   settings.use_cached_picture_raster =
       !cmd.HasSwitch(cc::switches::kDisableCachedPictureRaster);
@@ -509,8 +515,8 @@ cc::LayerTreeSettings RenderWidgetCompositor::GenerateLayerTreeSettings(
 
 // static
 cc::ManagedMemoryPolicy RenderWidgetCompositor::GetGpuMemoryPolicy(
-    const cc::ManagedMemoryPolicy& policy) {
-  cc::ManagedMemoryPolicy actual = policy;
+    const cc::ManagedMemoryPolicy& default_policy) {
+  cc::ManagedMemoryPolicy actual = default_policy;
   actual.bytes_limit_when_visible = 0;
 
   // If the value was overridden on the command line, use the specified value.