Adding GpuMemoryManager to track GpuCommandBufferStub visibility and last_used_time and dictate mem…

content/common/gpu/gpu_channel.cc

Index: content/common/gpu/gpu_channel.cc
diff --git a/content/common/gpu/gpu_channel.cc b/content/common/gpu/gpu_channel.cc
index ffbbc3c1e6838567360d97fb71855492c88b6d59..dff4db6e5140acf332dcc8ac567fe234260ed91d 100644
--- a/content/common/gpu/gpu_channel.cc
+++ b/content/common/gpu/gpu_channel.cc
@@ -135,6 +135,19 @@ bool GpuChannel::Send(IPC::Message* message) {
   return channel_->Send(message);
 }
 
+void GpuChannel::AppendAllCommandBufferStubs(
+    std::vector<GpuMemoryManageableCommandBufferStub*>& stubs_with_surface,
+    std::vector<GpuMemoryManageableCommandBufferStub*>& stubs_without_surface) {
+  for (StubMap::Iterator<GpuCommandBufferStub> it(&stubs_);
+      !it.IsAtEnd(); it.Advance()) {
+    GpuMemoryManageableCommandBufferStub* stub = it.GetCurrentValue();
+    if (stub->surface_state().surface_id == 0)
+      stubs_without_surface.push_back(stub);
+    else
+      stubs_with_surface.push_back(stub);
+  }
+}
+
 bool GpuChannel::IsScheduled() {
   for (StubMap::Iterator<GpuCommandBufferStub> it(&stubs_);
        !it.IsAtEnd();