gpu in-memory program cache implementation with a memory limit + lru eviction.

content/common/gpu/gpu_command_buffer_stub.cc

 // Copyright (c) 2012 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.
 
 #if defined(ENABLE_GPU)
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 358 matching lines @@
   }
 
   if (!context_->MakeCurrent(surface_.get())) {
     // Ensure the decoder is not destroyed if it is not initialized.
     decoder_.reset();
     LOG(ERROR) << "Failed to make context current.";
     OnInitializeFailed(reply_message);
     return;
   }
 
+  if (!context_group_->has_program_cache()) {
+    context_group_->set_program_cache(
+        channel_->gpu_channel_manager()->program_cache());
+  }
+
   // Initialize the decoder with either the view or pbuffer GLContext.
   if (!decoder_->Initialize(surface_,
                             context_,
                             !surface_id(),
                             initial_size_,
                             disallowed_features_,
                             allowed_extensions_.c_str(),
                             requested_attribs_)) {
     DLOG(ERROR) << "Failed to initialize decoder.";
     OnInitializeFailed(reply_message);
@@ skipping 408 matching lines @@
     const GpuMemoryAllocation& allocation) {
   Send(new GpuCommandBufferMsg_SetMemoryAllocation(route_id_, allocation));
   // This can be called outside of OnMessageReceived, so the context needs to be
   // made current before calling methods on the surface.
   if (!surface_ || !MakeCurrent())
     return;
   surface_->SetFrontbufferAllocation(allocation.suggest_have_frontbuffer);
 }
 
 #endif  // defined(ENABLE_GPU)