Clarify the process title of GPU broker process.

content/common/sandbox_linux/bpf_gpu_policy_linux.h

Index: content/common/sandbox_linux/bpf_gpu_policy_linux.h
diff --git a/content/common/sandbox_linux/bpf_gpu_policy_linux.h b/content/common/sandbox_linux/bpf_gpu_policy_linux.h
index 6b1ba4a4c318520ceefc06f872559cfd33a6b352..6d6c2941fddea24b49f6c85cc7dbd76e86d82377 100644
--- a/content/common/sandbox_linux/bpf_gpu_policy_linux.h
+++ b/content/common/sandbox_linux/bpf_gpu_policy_linux.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <vector>
 
+#include "base/callback_forward.h"
 #include "content/common/sandbox_linux/sandbox_bpf_base_policy_linux.h"
 
 namespace sandbox {
@@ -28,13 +29,13 @@ class GpuProcessPolicy : public SandboxBPFBasePolicy {
 
  protected:
   // Start a broker process to handle open() inside the sandbox.
-  // |broker_sandboxer_callback| is a callback that will enable a suitable
+  // |gpu_broker_child_init_callback| is a callback that will enable a suitable
   // sandbox for the broker process itself.

[jln (very slow on Chromium), 2014/02/20 23:38:52]

Let's call it clearly broker_sandboxer_callback since that's still what
InitGpuBrokerProcess() expects as an argument: something that enables a sandbox.

[dshwang, 2014/02/21 07:03:13]

yep, done.

   // |read_whitelist_extra| and |write_whitelist_extra| are lists of file
   // names that should be whitelisted by the broker process, in addition to
   // the basic ones.
   void InitGpuBrokerProcess(
-      bool (*broker_sandboxer_callback)(void),
+      const base::Callback<bool(void)>& gpu_broker_child_init_callback,
       const std::vector<std::string>& read_whitelist_extra,
       const std::vector<std::string>& write_whitelist_extra);