Refactor client visibility handling

cc/output/gl_renderer.cc

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/gl_renderer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 397 matching lines @@
 
 GLRenderer::~GLRenderer() {
   while (!pending_async_read_pixels_.empty()) {
     PendingAsyncReadPixels* pending_read =
         pending_async_read_pixels_.back().get();
     pending_read->finished_read_pixels_callback.Cancel();
     pending_async_read_pixels_.pop_back();
   }
 
   CleanupSharedObjects();
+
+  if (context_visibility_) {
+    auto* context_provider = output_surface_->context_provider();
+    auto* cache_controller = context_provider->CacheController();
+    cache_controller->ClientBecameNotVisible(std::move(context_visibility_));
+  }
 }
 
 bool GLRenderer::CanPartialSwap() {
   auto* context_provider = output_surface_->context_provider();
   return context_provider->ContextCapabilities().post_sub_buffer;
 }
 
 void GLRenderer::DidChangeVisibility() {
   if (visible_) {
     output_surface_->EnsureBackbuffer();
   } else {
     TRACE_EVENT0("cc", "GLRenderer::DidChangeVisibility dropping resources");
     ReleaseRenderPassTextures();
     output_surface_->DiscardBackbuffer();
   }
 
   PrepareGeometry(NO_BINDING);
 
-  // Handle cleanup of resources on the ContextProvider. The compositor
-  // ContextProvider is not shared, so always pass 0 for the client_id.
-  // TODO(crbug.com/487471): Update this when we share compositor
-  // ContextProviders.
-  context_support_->SetClientVisible(0 /* client_id */, visible_);
-  bool aggressively_free_resources = !context_support_->AnyClientsVisible();
-  if (aggressively_free_resources)
-    output_surface_->context_provider()->DeleteCachedResources();
-  context_support_->SetAggressivelyFreeResources(aggressively_free_resources);
+  auto* context_provider = output_surface_->context_provider();
+  auto* cache_controller = context_provider->CacheController();
+  if (visible_) {
+    DCHECK(!context_visibility_);
+    context_visibility_ = cache_controller->ClientBecameVisible();
+  } else {
+    DCHECK(context_visibility_);
+    cache_controller->ClientBecameNotVisible(std::move(context_visibility_));
+  }
 }
 
 void GLRenderer::ReleaseRenderPassTextures() { render_pass_textures_.clear(); }
 
 void GLRenderer::DiscardPixels() {
   if (!use_discard_framebuffer_)
     return;
   bool using_default_framebuffer =
       !current_framebuffer_lock_ &&
       output_surface_->capabilities().uses_default_gl_framebuffer;
@@ skipping 3575 matching lines @@
 
   gl_->ScheduleCALayerSharedStateCHROMIUM(
       ca_layer_overlay->shared_state->opacity, is_clipped, clip_rect,
       sorting_context_id, gl_transform);
   gl_->ScheduleCALayerCHROMIUM(
       texture_id, contents_rect, ca_layer_overlay->background_color,
       ca_layer_overlay->edge_aa_mask, bounds_rect, filter);
 }
 
 }  // namespace cc