Show gpu process stats in about:tcmalloc

content/common/child_process_messages.h

 // 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.
 
 // Common IPC messages used for child processes.
 // Multiply-included message file, hence no include guard.
 
 #include "base/shared_memory.h"
 #include "base/tracked_objects.h"
 #include "base/values.h"
@@ skipping 74 matching lines @@
                      tracked_objects::ThreadData::Status /* profiler status */)
 
 // Send to all the child processes to send back profiler data (ThreadData in
 // tracked_objects).
 IPC_MESSAGE_CONTROL1(ChildProcessMsg_GetChildProfilerData,
                      int /* sequence number */)
 
 // Sent to child processes to dump their handle table.
 IPC_MESSAGE_CONTROL0(ChildProcessMsg_DumpHandles)
 
+#if defined(USE_TCMALLOC)
+// Sent to child process to request tcmalloc stats.
+IPC_MESSAGE_CONTROL0(ChildProcessMsg_GetTcmallocStats)
+#endif
+
 ////////////////////////////////////////////////////////////////////////////////
 // Messages sent from the child process to the browser.
 
 IPC_MESSAGE_CONTROL0(ChildProcessHostMsg_ShutdownRequest)
 
 // Notify the browser that this child process supports tracing.
 IPC_MESSAGE_CONTROL0(ChildProcessHostMsg_ChildSupportsTracing)
 
 // Reply from child processes acking ChildProcessMsg_TraceChangeStatus(false).
 IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_EndTracingAck,
@@ skipping 26 matching lines @@
 
 // Release the cached font
 IPC_MESSAGE_CONTROL0(ChildProcessHostMsg_ReleaseCachedFonts)
 #endif  // defined(OS_WIN)
 
 // Asks the browser to create a block of shared memory for the child process to
 // fill in and pass back to the browser.
 IPC_SYNC_MESSAGE_CONTROL1_1(ChildProcessHostMsg_SyncAllocateSharedMemory,
                             uint32 /* buffer size */,
                             base::SharedMemoryHandle)
+
+#if defined(USE_TCMALLOC)
+// Reply to ChildProcessMsg_GetTcmallocStats.
+IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_TcmallocStats,
+                     std::string /* output */)
+#endif