Make shared memory allocation possible for all child process types.

content/browser/renderer_host/render_message_filter.cc

Index: content/browser/renderer_host/render_message_filter.cc
===================================================================
--- content/browser/renderer_host/render_message_filter.cc	(revision 104763)
+++ content/browser/renderer_host/render_message_filter.cc	(working copy)
@@ -361,8 +361,8 @@
         render_widget_helper_->DidReceiveUpdateMsg(message))
     IPC_MESSAGE_HANDLER(DesktopNotificationHostMsg_CheckPermission,
                         OnCheckNotificationPermission)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_AllocateSharedMemoryBuffer,
-                        OnAllocateSharedMemoryBuffer)
+    IPC_MESSAGE_HANDLER(ChildProcessHostMsg_SyncAllocateSharedMemory,
+                        OnAllocateSharedMemory)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(ViewHostMsg_AllocTransportDIB, OnAllocTransportDIB)
     IPC_MESSAGE_HANDLER(ViewHostMsg_FreeTransportDIB, OnFreeTransportDIB)
@@ -651,16 +651,11 @@
       CheckDesktopNotificationPermission(source_url, resource_context_);
 }
 
-void RenderMessageFilter::OnAllocateSharedMemoryBuffer(
-    uint32 buffer_size,
+void RenderMessageFilter::OnAllocateSharedMemory(
+    size_t buffer_size,
     base::SharedMemoryHandle* handle) {
-  base::SharedMemory shared_buf;
-  if (!shared_buf.CreateAndMapAnonymous(buffer_size)) {
-    *handle = base::SharedMemory::NULLHandle();
-    NOTREACHED() << "Cannot map shared memory buffer";
-    return;
-  }
-  shared_buf.GiveToProcess(peer_handle(), handle);
+  ChildProcessHost::OnAllocateSharedMemory(
+      buffer_size, peer_handle(), handle);
 }
 
 net::URLRequestContext* RenderMessageFilter::GetRequestContextForURL(