Switch Linux Auru ports over to POSIX SHM instead of legacy SYSV SHM.

content/common/view_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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
@@ skipping 2345 matching lines @@
                     bool /* is_begin */)
 
 #elif defined(OS_MACOSX)
 // Request that the browser load a font into shared memory for us.
 IPC_SYNC_MESSAGE_CONTROL1_3(ViewHostMsg_LoadFont,
                            FontDescriptor /* font to load */,
                            uint32 /* buffer size */,
                            base::SharedMemoryHandle /* font data */,
                            uint32 /* font id */)
 
-// On OSX, we cannot allocated shared memory from within the sandbox, so
+// Informs the browser that a plugin has gained or lost focus.
+IPC_MESSAGE_ROUTED2(ViewHostMsg_PluginFocusChanged,
+                    bool, /* focused */
+                    int /* plugin_id */)
+
+// Instructs the browser to start plugin IME.
+IPC_MESSAGE_ROUTED0(ViewHostMsg_StartPluginIme)
+
+#elif defined(OS_WIN)
+// Request that the given font characters be loaded by the browser so it's
+// cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
+// for details.
+IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
+                            LOGFONT /* font_data */,
+                            string16 /* characters */)
+#endif
+
+#if defined(OS_POSIX)
+// On POSIX, we cannot allocated shared memory from within the sandbox, so
 // this call exists for the renderer to ask the browser to allocate memory
 // on its behalf. We return a file descriptor to the POSIX shared memory.
 // If the |cache_in_browser| flag is |true|, then a copy of the shmem is kept
 // by the browser, and it is the caller's repsonsibility to send a
 // ViewHostMsg_FreeTransportDIB message in order to release the cached shmem.
 // In all cases, the caller is responsible for deleting the resulting
 // TransportDIB.
 IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_AllocTransportDIB,
                             size_t, /* bytes requested */
                             bool, /* cache in the browser */
                             TransportDIB::Handle /* DIB */)
 
 // Since the browser keeps handles to the allocated transport DIBs, this
 // message is sent to tell the browser that it may release them when the
 // renderer is finished with them.
 IPC_MESSAGE_CONTROL1(ViewHostMsg_FreeTransportDIB,
                      TransportDIB::Id /* DIB id */)
-
-// Informs the browser that a plugin has gained or lost focus.
-IPC_MESSAGE_ROUTED2(ViewHostMsg_PluginFocusChanged,
-                    bool, /* focused */
-                    int /* plugin_id */)
-
-// Instructs the browser to start plugin IME.
-IPC_MESSAGE_ROUTED0(ViewHostMsg_StartPluginIme)
-
-#elif defined(OS_WIN)
-// Request that the given font characters be loaded by the browser so it's
-// cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
-// for details.
-IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
-                            LOGFONT /* font_data */,
-                            string16 /* characters */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.