Add the ability to clear the shader disk cache.

chrome/browser/browsing_data/browsing_data_remover.cc

Index: chrome/browser/browsing_data/browsing_data_remover.cc
diff --git a/chrome/browser/browsing_data/browsing_data_remover.cc b/chrome/browser/browsing_data/browsing_data_remover.cc
index 8cd800cdec188cbeaf8810ade0ad335af74176b5..5c3e0e458f52f1cf81e84f1ec0b8c9f223642de5 100644
--- a/chrome/browser/browsing_data/browsing_data_remover.cc
+++ b/chrome/browser/browsing_data/browsing_data_remover.cc
@@ -51,6 +51,7 @@
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/plugin_data_remover.h"
+#include "content/public/browser/shader_disk_cache.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/user_metrics.h"
 #include "net/base/net_errors.h"
@@ -148,6 +149,7 @@ BrowsingDataRemover::BrowsingDataRemover(Profile* profile,
       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) {
@@ -506,6 +508,17 @@ void BrowsingDataRemover::RemoveImpl(int remove_mask,
   }
 #endif
 
+  if (remove_mask & REMOVE_SHADER_CACHE) {
+    waiting_for_clear_shader_cache_ = true;
+    content::RecordAction(UserMetricsAction("ClearBrowsingData_ShaderCache"));
+
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&BrowsingDataRemover::ClearShaderCacheOnIOThread,
+                   base::Unretained(this), profile_->GetPath(), delete_begin_,
+                   delete_end_));
+  }
+
   // Always wipe accumulated network related data (TransportSecurityState and
   // HttpServerPropertiesManager data).
   waiting_for_clear_networking_history_ = true;
@@ -575,7 +588,8 @@ bool BrowsingDataRemover::AllDone() {
       !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,
@@ -768,6 +782,36 @@ void BrowsingDataRemover::DoClearCache(int rv) {
   }
 }
 
+void BrowsingDataRemover::ClearedShaderCache() {
+  // This function should be called on the UI thread.
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  waiting_for_clear_shader_cache_ = false;
+  NotifyAndDeleteIfDone();
+}
+
+void BrowsingDataRemover::ClearedShaderCacheOnIOThread() {
+  // This function should be called on the IO thread.
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  // Notify the UI thread that we are done.
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      base::Bind(&BrowsingDataRemover::ClearedShaderCache,
+                 base::Unretained(this)));
+}
+
+void BrowsingDataRemover::ClearShaderCacheOnIOThread(
+    const base::FilePath path, const base::Time delete_begin,
+    const base::Time delete_end) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  content::ShaderCacheFactory::GetInstance()->ClearByPath(
+      path, delete_begin, delete_end,
+      base::Bind(&BrowsingDataRemover::ClearedShaderCacheOnIOThread,
+                 base::Unretained(this)));
+}
+
 #if !defined(DISABLE_NACL)
 void BrowsingDataRemover::ClearedNaClCache() {
   // This function should be called on the UI thread.