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

content/common/gpu/gpu_channel_manager.cc

Index: content/common/gpu/gpu_channel_manager.cc
diff --git a/content/common/gpu/gpu_channel_manager.cc b/content/common/gpu/gpu_channel_manager.cc
index 5978b2e6dfb49153fde49b2707a93bda7213a30f..be60a19413468e7bca9090760b360de78b511651 100644
--- a/content/common/gpu/gpu_channel_manager.cc
+++ b/content/common/gpu/gpu_channel_manager.cc
@@ -5,12 +5,17 @@
 #include "content/common/gpu/gpu_channel_manager.h"
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "content/common/child_thread.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_memory_manager.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/gpu/sync_point_manager.h"
+#include "gpu/command_buffer/service/feature_info.h"
+#include "gpu/command_buffer/service/gpu_switches.h"
 #include "gpu/command_buffer/service/mailbox_manager.h"
+#include "gpu/command_buffer/service/memory_program_cache.h"
+#include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_share_group.h"
 
 GpuChannelManager::GpuChannelManager(ChildThread* gpu_child_thread,
@@ -24,7 +29,8 @@ GpuChannelManager::GpuChannelManager(ChildThread* gpu_child_thread,
       ALLOW_THIS_IN_INITIALIZER_LIST(gpu_memory_manager_(this,
           GpuMemoryManager::kDefaultMaxSurfacesWithFrontbufferSoftLimit)),
       watchdog_(watchdog),
-      sync_point_manager_(new SyncPointManager) {
+      sync_point_manager_(new SyncPointManager),
+      program_cache_(NULL) {
   DCHECK(gpu_child_thread);
   DCHECK(io_message_loop);
   DCHECK(shutdown_event);
@@ -34,6 +40,16 @@ GpuChannelManager::~GpuChannelManager() {
   gpu_channels_.clear();
 }
 
+gpu::gles2::ProgramCache* GpuChannelManager::program_cache() {
+  if (!program_cache_.get() &&
+      (gfx::g_ARB_get_program_binary || gfx::g_OES_get_program_binary) &&
+      !CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableGpuProgramCache)) {
+    program_cache_.reset(new gpu::gles2::MemoryProgramCache());
+  }
+  return program_cache_.get();
+}
+
 void GpuChannelManager::RemoveChannel(int client_id) {
   gpu_channels_.erase(client_id);
 }
@@ -65,7 +81,6 @@ void GpuChannelManager::AppendAllCommandBufferStubs(
       it != gpu_channels_.end(); ++it ) {
     it->second->AppendAllCommandBufferStubs(stubs);
   }
-
 }
 
 bool GpuChannelManager::OnMessageReceived(const IPC::Message& msg) {