Add the ability to clear the shader disk cache.

chrome/browser/browsing_data/browsing_data_remover.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/browsing_data/browsing_data_remover.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 130 matching lines @@
       waiting_for_clear_history_(false),
       waiting_for_clear_hostname_resolution_cache_(false),
       waiting_for_clear_local_storage_(false),
       waiting_for_clear_nacl_cache_(false),
       waiting_for_clear_network_predictor_(false),
       waiting_for_clear_networking_history_(false),
       waiting_for_clear_plugin_data_(false),
       waiting_for_clear_quota_managed_data_(false),
       waiting_for_clear_server_bound_certs_(false),
       waiting_for_clear_session_storage_(false),
+      waiting_for_clear_shader_cache_(false),
       remove_mask_(0),
       remove_origin_(GURL()),
       origin_set_mask_(0) {
   DCHECK(profile);
   // crbug.com/140910: Many places were calling this with base::Time() as
   // delete_end, even though they should've used base::Time::Max(). Work around
   // it here. New code should use base::Time::Max().
   DCHECK(delete_end_ != base::Time());
   if (delete_end_ == base::Time())
     delete_end_ = base::Time::Max();
@@ skipping 338 matching lines @@
     waiting_for_clear_content_licenses_ = true;
     if (!pepper_flash_settings_manager_.get()) {
       pepper_flash_settings_manager_.reset(
           new PepperFlashSettingsManager(this, profile_));
     }
     deauthorize_content_licenses_request_id_ =
         pepper_flash_settings_manager_->DeauthorizeContentLicenses();
   }
 #endif
 
+  if (remove_mask & REMOVE_SHADER_CACHE) {
+    waiting_for_clear_shader_cache_ = true;
+    content::RecordAction(UserMetricsAction("ClearBrowsingData_ShaderCache"));
+
+    ClearShaderCacheOnUIThread();
+  }
+
   // Always wipe accumulated network related data (TransportSecurityState and
   // HttpServerPropertiesManager data).
   waiting_for_clear_networking_history_ = true;
   profile_->ClearNetworkingHistorySince(
       delete_begin_,
       base::Bind(&BrowsingDataRemover::OnClearedNetworkingHistory,
                  base::Unretained(this)));
 }
 
 void BrowsingDataRemover::AddObserver(Observer* observer) {
@@ skipping 49 matching lines @@
       !waiting_for_clear_history_ &&
       !waiting_for_clear_local_storage_ &&
       !waiting_for_clear_session_storage_ &&
       !waiting_for_clear_networking_history_ &&
       !waiting_for_clear_server_bound_certs_ &&
       !waiting_for_clear_plugin_data_ &&
       !waiting_for_clear_quota_managed_data_ &&
       !waiting_for_clear_content_licenses_ &&
       !waiting_for_clear_form_ &&
       !waiting_for_clear_hostname_resolution_cache_ &&
-      !waiting_for_clear_network_predictor_;
+      !waiting_for_clear_network_predictor_ &&
+      !waiting_for_clear_shader_cache_;
 }
 
 void BrowsingDataRemover::Observe(int type,
                                   const content::NotificationSource& source,
                                   const content::NotificationDetails& details) {
   // TODO(brettw) bug 1139736: This should also observe session
   // clearing (what about other things such as passwords, etc.?) and wait for
   // them to complete before continuing.
   DCHECK(type == chrome::NOTIFICATION_TEMPLATE_URL_SERVICE_LOADED);
   TemplateURLService* model = content::Source<TemplateURLService>(source).ptr();
@@ skipping 173 matching lines @@
       }
       default: {
         NOTREACHED() << "bad state";
         next_cache_state_ = STATE_NONE;  // Stop looping.
         return;
       }
     }
   }
 }
 
+void BrowsingDataRemover::ClearedShaderCache() {
+  // This function should be called on the UI thread.

[jam, 2013/04/02 17:34:50]

nit: redundant comment, remove per style guide

[dsinclair, 2013/04/03 18:59:23]

Done.

+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  waiting_for_clear_shader_cache_ = false;
+  NotifyAndDeleteIfDone();
+}
+
+void BrowsingDataRemover::ClearShaderCacheOnUIThread() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  BrowserContext::GetDefaultStoragePartition(profile_)->AsyncClearDataBetween(
+      content::StoragePartition::kShaderStorage, delete_begin_, delete_end_,
+      base::Bind(&BrowsingDataRemover::ClearedShaderCache,
+                 base::Unretained(this)));
+}
+
 #if !defined(DISABLE_NACL)
 void BrowsingDataRemover::ClearedNaClCache() {
   // This function should be called on the UI thread.
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   waiting_for_clear_nacl_cache_ = false;
 
   NotifyAndDeleteIfDone();
 }
 
@@ skipping 242 matching lines @@
       BrowserThread::UI, FROM_HERE,
       base::Bind(&BrowsingDataRemover::OnClearedFormData,
                  base::Unretained(this)));
 }
 
 void BrowsingDataRemover::OnClearedFormData() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   waiting_for_clear_form_ = false;
   NotifyAndDeleteIfDone();
 }