Update Context Client Visibility to use Scoped Pattern

content/renderer/android/synchronous_compositor_output_surface.cc

Index: content/renderer/android/synchronous_compositor_output_surface.cc
diff --git a/content/renderer/android/synchronous_compositor_output_surface.cc b/content/renderer/android/synchronous_compositor_output_surface.cc
index 027acb67123326d7d23ee78eda8770a8cec024d2..960a3ae980fc68366f2fc86faf6ee5ea8f744a56 100644
--- a/content/renderer/android/synchronous_compositor_output_surface.cc
+++ b/content/renderer/android/synchronous_compositor_output_surface.cc
@@ -368,8 +368,6 @@ void SynchronousCompositorOutputSurface::OnReclaimResources(
 void SynchronousCompositorOutputSurface::SetMemoryPolicy(size_t bytes_limit) {
   DCHECK(CalledOnValidThread());
   bool became_zero = memory_policy_.bytes_limit_when_visible && !bytes_limit;
-  bool became_non_zero =
-      !memory_policy_.bytes_limit_when_visible && bytes_limit;
   memory_policy_.bytes_limit_when_visible = bytes_limit;
   memory_policy_.num_resources_limit = kNumResourcesLimit;
 
@@ -379,11 +377,7 @@ void SynchronousCompositorOutputSurface::SetMemoryPolicy(size_t bytes_limit) {
   if (became_zero) {
     // This is small hack to drop context resources without destroying it
     // when this compositor is put into the background.
-    context_provider()->ContextSupport()->SetAggressivelyFreeResources(
-        true /* aggressively_free_resources */);
-  } else if (became_non_zero) {
-    context_provider()->ContextSupport()->SetAggressivelyFreeResources(
-        false /* aggressively_free_resources */);
+    context_provider()->DeleteCachedResources();
   }
 }