Make no-tcmalloc (really, non-base/allocator) builds work again,...

chrome/renderer/render_thread.cc

 // Copyright (c) 2009 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 "chrome/renderer/render_thread.h"
 
 #include <v8.h>
 
 #include <algorithm>
 #include <map>
@@ skipping 555 matching lines @@
   WebRuntimeFeatures::enableSessionStorage(
       command_line.HasSwitch(switches::kEnableSessionStorage));
 }
 
 void RenderThread::IdleHandler() {
   // It is possible that the timer was set while the widgets were idle,
   // but that they are no longer idle.  If so, just return.
   if (!widget_count_ || hidden_widget_count_ < widget_count_)
     return;
 
-#if defined(OS_WIN)
+#if defined(OS_WIN) && defined(USE_TCMALLOC)
   MallocExtension::instance()->ReleaseFreeMemory();
 #endif
 
   LOG(INFO) << "RenderThread calling v8 IdleNotification for " << this;
   v8::V8::IdleNotification();
 
   // Schedule next invocation.
   // Dampen the delay using the algorithm:
   //    delay = delay + 1 / (delay + 2)
   // Using floor(delay) has a dampening effect such as:
@@ skipping 34 matching lines @@
   while (sqlite3_release_memory(std::numeric_limits<int>::max()) > 0) {
   }
 
   // Repeatedly call the V8 idle notification until it returns true ("nothing
   // more to free").  Note that it makes more sense to do this than to implement
   // a new "delete everything" pass because object references make it difficult
   // to free everything possible in just one pass.
   while (!v8::V8::IdleNotification()) {
   }
 
-#if defined(OS_WIN)
+#if defined(OS_WIN) && defined(USE_TCMALLOC)
   // Tell tcmalloc to release any free pages it's still holding.
   MallocExtension::instance()->ReleaseFreeMemory();
 #endif
 }
 
 void RenderThread::OnPurgePluginListCache(bool reload_pages) {
   EnsureWebKitInitialized();
   // The call below will cause a GetPlugins call with refresh=true, but at this
   // point we already know that the browser has refreshed its list, so disable
   // refresh temporarily to prevent each renderer process causing the list to be
@@ skipping 13 matching lines @@
   spellchecker_->EnableAutoSpellCorrect(auto_spell_correct);
 }
 
 void RenderThread::OnSpellCheckWordAdded(const std::string& word) {
   spellchecker_->WordAdded(word);
 }
 
 void RenderThread::OnSpellCheckEnableAutoSpellCorrect(bool enable) {
   spellchecker_->EnableAutoSpellCorrect(enable);
 }