Refactor client visibility handling

android_webview/browser/aw_render_thread_context_provider.h

Index: android_webview/browser/aw_render_thread_context_provider.h
diff --git a/android_webview/browser/aw_render_thread_context_provider.h b/android_webview/browser/aw_render_thread_context_provider.h
index e2e45fbdba9eb385f96d038eba27597f83cd5825..fc5309f66dba06a1af7d54ffe12417c151f995b0 100644
--- a/android_webview/browser/aw_render_thread_context_provider.h
+++ b/android_webview/browser/aw_render_thread_context_provider.h
@@ -48,9 +48,9 @@ class AwRenderThreadContextProvider : public cc::ContextProvider {
   gpu::gles2::GLES2Interface* ContextGL() override;
   gpu::ContextSupport* ContextSupport() override;
   class GrContext* GrContext() override;
+  cc::ContextCacheController* CacheController() override;
   void InvalidateGrContext(uint32_t state) override;
   base::Lock* GetLock() override;
-  void DeleteCachedResources() override;
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override;
 
@@ -60,6 +60,7 @@ class AwRenderThreadContextProvider : public cc::ContextProvider {
 
   std::unique_ptr<gpu::GLInProcessContext> context_;
   sk_sp<class GrContext> gr_context_;
+  std::unique_ptr<cc::ContextCacheController> cache_controller_;
 
   LostContextCallback lost_context_callback_;