Refactor client visibility handling

android_webview/browser/aw_render_thread_context_provider.cc

 // Copyright 2015 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 "android_webview/browser/aw_render_thread_context_provider.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/trace_event/trace_event.h"
+#include "cc/output/context_cache_controller.h"
 #include "cc/output/managed_memory_policy.h"
 #include "gpu/command_buffer/client/gl_in_process_context.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/client/gles2_lib.h"
 #include "gpu/command_buffer/client/shared_memory_limits.h"
 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 #include "third_party/skia/include/gpu/gl/GrGLInterface.h"
 
 namespace android_webview {
@@ skipping 38 matching lines @@
   // relatively unused.
   limits.start_transfer_buffer_size = 64 * 1024;
   limits.min_transfer_buffer_size = 64 * 1024;
 
   context_.reset(gpu::GLInProcessContext::Create(
       service, surface, surface->IsOffscreen(), gfx::kNullAcceleratedWidget,
       nullptr /* share_context */, attributes, limits, nullptr, nullptr));
 
   context_->GetImplementation()->SetLostContextCallback(base::Bind(
       &AwRenderThreadContextProvider::OnLostContext, base::Unretained(this)));
+
+  cache_controller_.reset(
+      new cc::ContextCacheController(context_->GetImplementation()));
 }
 
 AwRenderThreadContextProvider::~AwRenderThreadContextProvider() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   if (gr_context_)
     gr_context_->releaseResourcesAndAbandonContext();
 }
 
 uint32_t AwRenderThreadContextProvider::GetCopyTextureInternalFormat() {
   // The attributes used in the constructor included an alpha channel.
@@ skipping 28 matching lines @@
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (gr_context_)
     return gr_context_.get();
 
   sk_sp<GrGLInterface> interface(
       skia_bindings::CreateGLES2InterfaceBindings(ContextGL()));
   gr_context_ = sk_sp<::GrContext>(GrContext::Create(
       // GrContext takes ownership of |interface|.
       kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
+  cache_controller_->SetGrContext(gr_context_.get());
   return gr_context_.get();
 }
 
+cc::ContextCacheController* AwRenderThreadContextProvider::CacheController() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
+  return cache_controller_.get();
+}
+
 void AwRenderThreadContextProvider::InvalidateGrContext(uint32_t state) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (gr_context_)
     gr_context_->resetContext(state);
 }
 
 base::Lock* AwRenderThreadContextProvider::GetLock() {
   // This context provider is not used on multiple threads.
   NOTREACHED();
   return nullptr;
 }
 
-void AwRenderThreadContextProvider::DeleteCachedResources() {
-  DCHECK(main_thread_checker_.CalledOnValidThread());
-
-  if (gr_context_) {
-    TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources",
-                         TRACE_EVENT_SCOPE_THREAD);
-    gr_context_->freeGpuResources();
-  }
-}
-
 void AwRenderThreadContextProvider::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   lost_context_callback_ = lost_context_callback;
 }
 
 void AwRenderThreadContextProvider::OnLostContext() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (!lost_context_callback_.is_null())
     lost_context_callback_.Run();
   if (gr_context_)
     gr_context_->abandonContext();
 }
 
 }  // namespace android_webview