Remove unused features for in-process GL contexts.

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"
@@ skipping 34 matching lines @@
   attributes.alpha_size = 8;
   attributes.stencil_size = 8;
   // The depth buffer may exist due to having a stencil buffer, but we don't
   // need one, so use -1 for it.
   attributes.depth_size = -1;
   attributes.samples = 0;
   attributes.sample_buffers = 0;
   attributes.bind_generates_resource = false;
   context_.reset(gpu::GLInProcessContext::Create(
       service, surface, surface->IsOffscreen(), gfx::kNullAcceleratedWidget,
-      surface->GetSize(), nullptr /* share_context */,
-      false /* share_resources */, attributes, gfx::PreferDiscreteGpu,
-      gpu::GLInProcessContextSharedMemoryLimits(), nullptr, nullptr));
-
-  context_->SetContextLostCallback(base::Bind(
-      &AwRenderThreadContextProvider::OnLostContext, base::Unretained(this)));
+      surface->GetSize(), nullptr /* share_context */, attributes,
+      gfx::PreferDiscreteGpu, gpu::GLInProcessContextSharedMemoryLimits(),
+      nullptr, nullptr));
 
   capabilities_.gpu = context_->GetImplementation()->capabilities();
 }
 
 AwRenderThreadContextProvider::~AwRenderThreadContextProvider() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   if (gr_context_)
     gr_context_->releaseResourcesAndAbandonContext();
 }
 
@@ skipping 38 matching lines @@
 }
 
 void AwRenderThreadContextProvider::InvalidateGrContext(uint32_t state) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (gr_context_)
     gr_context_->resetContext(state);
 }
 
 void AwRenderThreadContextProvider::SetupLock() {
-  context_->SetLock(&context_lock_);
+  // This context provider is not used on multiple threads.
+  NOTREACHED();
 }
 
 base::Lock* AwRenderThreadContextProvider::GetLock() {
-  return &context_lock_;
+  // 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())
-    base::ResetAndReturn(&lost_context_callback_).Run();
-  if (gr_context_)
-    gr_context_->abandonContext();
+  // No support for lost context callbacks with in-process GL.
+  NOTREACHED();
 }
 
 }  // namespace android_webview