Remove dead extensions tracking code.

extensions/browser/runtime_data_unittest.cc

 // Copyright 2014 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 "extensions/browser/runtime_data.h"
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 56 matching lines @@
   // An extension is not being upgraded until the flag is set.
   EXPECT_FALSE(runtime_data_.IsBeingUpgraded(extension->id()));
 
   // The flag can be toggled.
   runtime_data_.SetBeingUpgraded(extension->id(), true);
   EXPECT_TRUE(runtime_data_.IsBeingUpgraded(extension->id()));
   runtime_data_.SetBeingUpgraded(extension->id(), false);
   EXPECT_FALSE(runtime_data_.IsBeingUpgraded(extension->id()));
 }
 
-TEST_F(RuntimeDataTest, HasUsedWebRequest) {
-  scoped_refptr<Extension> extension = test_util::CreateEmptyExtension();
-
-  // An extension has not used web request until the flag is set.
-  EXPECT_FALSE(runtime_data_.HasUsedWebRequest(extension->id()));
-
-  // The flag can be toggled.
-  runtime_data_.SetHasUsedWebRequest(extension->id(), true);
-  EXPECT_TRUE(runtime_data_.HasUsedWebRequest(extension->id()));
-  runtime_data_.SetHasUsedWebRequest(extension->id(), false);
-  EXPECT_FALSE(runtime_data_.HasUsedWebRequest(extension->id()));
-}
-
 // Unloading an extension erases any data that shouldn't explicitly be kept
 // across loads.
 TEST_F(RuntimeDataTest, OnExtensionUnloaded) {
   scoped_refptr<Extension> extension = CreateExtensionWithBackgroundPage();
   runtime_data_.SetBackgroundPageReady(extension->id(), true);
   ASSERT_TRUE(runtime_data_.HasExtensionForTesting(extension->id()));
   runtime_data_.SetBeingUpgraded(extension->id(), true);
 
   runtime_data_.OnExtensionUnloaded(
       NULL, extension.get(), UnloadedExtensionInfo::REASON_DISABLE);
   EXPECT_TRUE(runtime_data_.HasExtensionForTesting(extension->id()));
   EXPECT_FALSE(runtime_data_.IsBackgroundPageReady(extension.get()));
   EXPECT_TRUE(runtime_data_.IsBeingUpgraded(extension->id()));
 }
 
 }  // namespace
 }  // namespace extensions