Rewrite base::Bind into base::BindOnce on trivial cases in base

base/trace_event/memory_dump_manager.cc

 // Copyright 2015 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.
 
 #include "base/trace_event/memory_dump_manager.h"
 
 #include <inttypes.h>
 #include <stdio.h>
 
 #include <algorithm>
@@ skipping 331 matching lines @@
     // This actually happens in some tests which don't have a clean tear-down
     // path for RenderThreadImpl::Init().
     if (already_registered)
       return;
 
     // The list of polling MDPs is populated OnTraceLogEnabled(). This code
     // deals with the case of a MDP capable of fast polling that is registered
     // after the OnTraceLogEnabled()
     if (options.is_fast_polling_supported && dump_thread_) {
       dump_thread_->task_runner()->PostTask(
-          FROM_HERE, Bind(&MemoryDumpManager::RegisterPollingMDPOnDumpThread,
-                          Unretained(this), mdpinfo));
+          FROM_HERE,
+          BindOnce(&MemoryDumpManager::RegisterPollingMDPOnDumpThread,
+                   Unretained(this), mdpinfo));
     }
   }
 
   if (heap_profiling_enabled_)
     mdp->OnHeapProfilingEnabled(true);
 }
 
 void MemoryDumpManager::UnregisterDumpProvider(MemoryDumpProvider* mdp) {
   UnregisterDumpProviderInternal(mdp, false /* delete_async */);
 }
@@ skipping 49 matching lines @@
     // unregistration will not race with OnMemoryDump() calls.
     DCHECK((*mdp_iter)->task_runner &&
            (*mdp_iter)->task_runner->RunsTasksOnCurrentThread())
         << "MemoryDumpProvider \"" << (*mdp_iter)->name << "\" attempted to "
         << "unregister itself in a racy way. Please file a crbug.";
   }
 
   if ((*mdp_iter)->options.is_fast_polling_supported && dump_thread_) {
     DCHECK(take_mdp_ownership_and_delete_async);
     dump_thread_->task_runner()->PostTask(
-        FROM_HERE, Bind(&MemoryDumpManager::UnregisterPollingMDPOnDumpThread,
-                        Unretained(this), *mdp_iter));
+        FROM_HERE,
+        BindOnce(&MemoryDumpManager::UnregisterPollingMDPOnDumpThread,
+                 Unretained(this), *mdp_iter));
   }
 
   // The MDPInfo instance can still be referenced by the
   // |ProcessMemoryDumpAsyncState.pending_dump_providers|. For this reason
   // the MDPInfo is flagged as disabled. It will cause InvokeOnMemoryDump()
   // to just skip it, without actually invoking the |mdp|, which might be
   // destroyed by the caller soon after this method returns.
   (*mdp_iter)->disabled = true;
   dump_providers_.erase(mdp_iter);
 }
@@ skipping 174 matching lines @@
   }
 
   if (mdpinfo->options.dumps_on_single_thread_task_runner &&
       task_runner->RunsTasksOnCurrentThread()) {
     // If |dumps_on_single_thread_task_runner| is true then no PostTask is
     // required if we are on the right thread.
     return InvokeOnMemoryDump(pmd_async_state.release());
   }
 
   bool did_post_task = task_runner->PostTask(
-      FROM_HERE, Bind(&MemoryDumpManager::InvokeOnMemoryDump, Unretained(this),
-                      Unretained(pmd_async_state.get())));
+      FROM_HERE, BindOnce(&MemoryDumpManager::InvokeOnMemoryDump,
+                          Unretained(this), Unretained(pmd_async_state.get())));
 
   if (did_post_task) {
     // Ownership is tranferred to InvokeOnMemoryDump().
     ignore_result(pmd_async_state.release());
     return;
   }
 
   // PostTask usually fails only if the process or thread is shut down. So, the
   // dump provider is disabled here. But, don't disable unbound dump providers.
   // The utility thread is normally shutdown when disabling the trace and
@@ skipping 123 matching lines @@
 // static
 void MemoryDumpManager::FinalizeDumpAndAddToTrace(
     std::unique_ptr<ProcessMemoryDumpAsyncState> pmd_async_state) {
   HEAP_PROFILER_SCOPED_IGNORE;
   DCHECK(pmd_async_state->pending_dump_providers.empty());
   const uint64_t dump_guid = pmd_async_state->req_args.dump_guid;
   if (!pmd_async_state->callback_task_runner->BelongsToCurrentThread()) {
     scoped_refptr<SingleThreadTaskRunner> callback_task_runner =
         pmd_async_state->callback_task_runner;
     callback_task_runner->PostTask(
-        FROM_HERE, Bind(&MemoryDumpManager::FinalizeDumpAndAddToTrace,
-                        Passed(&pmd_async_state)));
+        FROM_HERE, BindOnce(&MemoryDumpManager::FinalizeDumpAndAddToTrace,
+                            Passed(&pmd_async_state)));
     return;
   }
 
   TRACE_EVENT0(kTraceCategory, "MemoryDumpManager::FinalizeDumpAndAddToTrace");
 
   // The results struct to fill.
   // TODO(hjd): Transitional until we send the full PMD. See crbug.com/704203
   MemoryDumpCallbackResult result;
 
   for (const auto& kv : pmd_async_state->process_dumps) {
@@ skipping 218 matching lines @@
   if (iter == process_dumps.end()) {
     std::unique_ptr<ProcessMemoryDump> new_pmd(
         new ProcessMemoryDump(session_state, dump_args));
     iter = process_dumps.insert(std::make_pair(pid, std::move(new_pmd))).first;
   }
   return iter->second.get();
 }
 
 }  // namespace trace_event
 }  // namespace base