Prerender: omnibox and instant field trial parameters.

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 <stddef.h>
 
 #include <algorithm>
 #include <functional>
@@ skipping 148 matching lines @@
 };
 
 PrerenderManagerObserver::~PrerenderManagerObserver() {}
 
 // static
 int PrerenderManager::prerenders_per_session_count_ = 0;
 
 // static
 PrerenderManager::PrerenderManagerMode PrerenderManager::mode_ =
     PRERENDER_MODE_ENABLED;
+PrerenderManager::PrerenderManagerMode PrerenderManager::instant_mode_ =
+    PRERENDER_MODE_ENABLED;
+PrerenderManager::PrerenderManagerMode PrerenderManager::omnibox_mode_ =
+    PRERENDER_MODE_ENABLED;
 
 struct PrerenderManager::NavigationRecord {
   NavigationRecord(const GURL& url, base::TimeTicks time, Origin origin)
       : url(url), time(time), origin(origin) {}
 
   GURL url;
   base::TimeTicks time;
   Origin origin;
 };
 
@@ skipping 432 matching lines @@
   }
   histograms_->RecordPerceivedFirstContentfulPaintStatus(
       tab_helper->origin(), fcp_recorded, was_hidden);
 
   for (auto& observer : observers_) {
     observer->OnFirstContentfulPaint();
   }
 }
 
 // static
-PrerenderManager::PrerenderManagerMode PrerenderManager::GetMode() {
-  return mode_;
+PrerenderManager::PrerenderManagerMode PrerenderManager::GetMode(
+    Origin origin) {
+  switch (origin) {
+    case ORIGIN_INSTANT:
+      return instant_mode_;
+    case ORIGIN_OMNIBOX:
+      return omnibox_mode_;
+    default:
+      return mode_;
+  }
 }
 
 // static
 void PrerenderManager::SetMode(PrerenderManagerMode mode) {
   mode_ = mode;
 }
 
 // static
-bool PrerenderManager::IsPrerenderingPossible() {
-  return GetMode() != PRERENDER_MODE_DISABLED;
+void PrerenderManager::SetInstantMode(PrerenderManagerMode mode) {
+  instant_mode_ = mode;
+}
+
+// static
+void PrerenderManager::SetOmniboxMode(PrerenderManagerMode mode) {
+  omnibox_mode_ = mode;
+}
+
+// static
+bool PrerenderManager::IsAnyPrerenderingPossible() {
+  return mode_ != PRERENDER_MODE_DISABLED ||
+         instant_mode_ != PRERENDER_MODE_DISABLED ||
+         omnibox_mode_ != PRERENDER_MODE_DISABLED;
 }
 
 // static
 bool PrerenderManager::IsNoStatePrefetch(Origin origin) {
   return !IsPrerenderingForced(origin) &&
-         GetMode() == PRERENDER_MODE_NOSTATE_PREFETCH;
+         GetMode(origin) == PRERENDER_MODE_NOSTATE_PREFETCH;
 }
 
 // static
 bool PrerenderManager::IsSimpleLoadExperiment(Origin origin) {
   return !IsPrerenderingForced(origin) &&
-         GetMode() == PRERENDER_MODE_SIMPLE_LOAD_EXPERIMENT;
+         GetMode(origin) == PRERENDER_MODE_SIMPLE_LOAD_EXPERIMENT;
 }
 
 bool PrerenderManager::IsWebContentsPrerendering(
     const WebContents* web_contents,
     Origin* origin) const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   PrerenderContents* prerender_contents = GetPrerenderContents(web_contents);
   if (!prerender_contents)
     return false;
 
@@ skipping 664 matching lines @@
   PrerenderContents* prerender_contents = GetPrerenderContents(tab);
   if (!prerender_contents)
     return;
 
   prerender_contents->Destroy(FINAL_STATUS_CREATING_AUDIO_STREAM);
 }
 
 void PrerenderManager::RecordNetworkBytes(Origin origin,
                                           bool used,
                                           int64_t prerender_bytes) {
-  if (!IsPrerenderingPossible())
+  if (!IsAnyPrerenderingPossible())
     return;
   int64_t recent_profile_bytes =
       profile_network_bytes_ - last_recorded_profile_network_bytes_;
   last_recorded_profile_network_bytes_ = profile_network_bytes_;
   DCHECK_GE(recent_profile_bytes, 0);
   histograms_->RecordNetworkBytes(
       origin, used, prerender_bytes, recent_profile_bytes);
 }
 
 bool PrerenderManager::IsPrerenderSilenceExperiment(Origin origin) const {
@@ skipping 59 matching lines @@
   if (origin == ORIGIN_EXTERNAL_REQUEST_FORCED_PRERENDER &&
       prediction_status == NetworkPredictionStatus::DISABLED_DUE_TO_NETWORK) {
     return NetworkPredictionStatus::ENABLED;
   }
   return prediction_status;
 }
 
 void PrerenderManager::AddProfileNetworkBytesIfEnabled(int64_t bytes) {
   DCHECK_GE(bytes, 0);
   if (GetPredictionStatus() == NetworkPredictionStatus::ENABLED &&
-      IsPrerenderingPossible())
+      IsAnyPrerenderingPossible())
     profile_network_bytes_ += bytes;
 }
 
 void PrerenderManager::AddPrerenderProcessHost(
     content::RenderProcessHost* process_host) {
   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);
@@ skipping 19 matching lines @@
   return weak_factory_.GetWeakPtr();
 }
 
 void PrerenderManager::SetPrerenderContentsFactoryForTest(
     PrerenderContents::Factory* prerender_contents_factory) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   prerender_contents_factory_.reset(prerender_contents_factory);
 }
 
 }  // namespace prerender