Clear shader disk cache after glProgramBinary failure.

services/ui/ws/gpu_host.cc

 // Copyright 2016 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 "services/ui/ws/gpu_host.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 95 matching lines @@
   // TODO(sad): Once GPU process is split, this would look like:
   //   connector->BindInterface("gpu", &gpu_main_);
   gpu_main_impl_ = base::MakeUnique<GpuMain>(MakeRequest(&gpu_main_));
   gpu_main_impl_->OnStart();
 
   // TODO(sad): Correctly initialize gpu::GpuPreferences (like it is initialized
   // in GpuProcessHost::Init()).
   gpu::GpuPreferences preferences;
   gpu_main_->CreateGpuService(MakeRequest(&gpu_service_),
                               gpu_host_binding_.CreateInterfacePtrAndBind(),
-                              preferences);
+                              preferences, mojo::ScopedSharedBufferHandle());

[ericrk, 2017/03/15 00:47:54]

This is just a no-op for now. Later, if this class wants to listen to any of the
GPU activity flags, it can create a GpuProcessHostActivityFlags and clone its
handle here.

Flags are currently only used with relation to the shader disk cache, which this
class currently no-ops.

   gpu_memory_buffer_manager_ = base::MakeUnique<ServerGpuMemoryBufferManager>(
       gpu_service_.get(), next_client_id_++);
 }
 
 GpuHost::~GpuHost() {}
 
 void GpuHost::Add(mojom::GpuRequest request) {
   mojo::MakeStrongBinding(
       base::MakeUnique<GpuClient>(next_client_id_++, &gpu_info_,
                                   gpu_memory_buffer_manager_.get(),
@@ skipping 61 matching lines @@
   NOTREACHED();
 #endif
 }
 
 void GpuHost::StoreShaderToDisk(int32_t client_id,
                                 const std::string& key,
                                 const std::string& shader) {}
 
 }  // namespace ws
 }  // namespace ui