favor DCHECK_CURRENTLY_ON for better logs in chrome/browser/prerender/, prefetch and printing

chrome/browser/prerender/prerender_manager.cc

 // 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.
 
 #include "chrome/browser/prerender/prerender_manager.h"
 
 #include <algorithm>
 #include <functional>
 #include <string>
 #include <vector>
@@ skipping 176 matching lines @@
       prerender_contents_factory_(PrerenderContents::CreateFactory()),
       last_prerender_start_time_(GetCurrentTimeTicks() -
           base::TimeDelta::FromMilliseconds(kMinTimeBetweenPrerendersMs)),
       prerender_history_(new PrerenderHistory(kHistoryLength)),
       histograms_(new PrerenderHistograms()),
       profile_network_bytes_(0),
       last_recorded_profile_network_bytes_(0) {
   // There are some assumptions that the PrerenderManager is on the UI thread.
   // Any other checks simply make sure that the PrerenderManager is accessed on
   // the same thread that it was created on.
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   // Certain experiments override our default config_ values.
   switch (PrerenderManager::GetMode()) {
     case PrerenderManager::PRERENDER_MODE_EXPERIMENT_MULTI_PRERENDER_GROUP:
       config_.max_link_concurrency = 4;
       config_.max_link_concurrency_per_launcher = 2;
       break;
     case PrerenderManager::PRERENDER_MODE_EXPERIMENT_15MIN_TTL_GROUP:
       config_.time_to_live = base::TimeDelta::FromMinutes(15);
       break;
@@ skipping 340 matching lines @@
   }
 
   // Destroy the old WebContents relatively promptly to reduce resource usage.
   PostCleanupTask();
 }
 
 void PrerenderManager::RecordPageLoadTimeNotSwappedIn(
     Origin origin,
     base::TimeDelta page_load_time,
     const GURL& url) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   histograms_->RecordPageLoadTimeNotSwappedIn(origin, page_load_time, url);
 }
 
 void PrerenderManager::RecordPerceivedPageLoadTime(
     Origin origin,
     NavigationType navigation_type,
     base::TimeDelta perceived_page_load_time,
     double fraction_plt_elapsed_at_swap_in,
     const GURL& url) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!IsEnabled())
     return;
 
   histograms_->RecordPerceivedPageLoadTime(
       origin, perceived_page_load_time, navigation_type, url);
 
   if (navigation_type == NAVIGATION_TYPE_PRERENDERED) {
     histograms_->RecordPercentLoadDoneAtSwapin(
         origin, fraction_plt_elapsed_at_swap_in);
   }
@@ skipping 679 matching lines @@
 }
 
 void PrerenderManager::AddProfileNetworkBytesIfEnabled(int64 bytes) {
   DCHECK_GE(bytes, 0);
   if (IsEnabled() && ActuallyPrerendering())
     profile_network_bytes_ += bytes;
 }
 
 void PrerenderManager::AddPrerenderProcessHost(
     content::RenderProcessHost* process_host) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(prerender_process_hosts_.find(process_host) ==
          prerender_process_hosts_.end());
   prerender_process_hosts_.insert(process_host);
   process_host->AddObserver(this);
 }
 
 bool PrerenderManager::MayReuseProcessHost(
     content::RenderProcessHost* process_host) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   // Isolate prerender processes to make the resource monitoring check more
   // accurate.
   return (prerender_process_hosts_.find(process_host) ==
           prerender_process_hosts_.end());
 }
 
 void PrerenderManager::RenderProcessHostDestroyed(
     content::RenderProcessHost* host) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   size_t erased = prerender_process_hosts_.erase(host);
   DCHECK_EQ(1u, erased);
 }
 
 }  // namespace prerender