Revert "Make a ResourceThrottle for extensions on top of net::URLRequestThrottlerManager."

Reason for revert:
Conditional jump on uninitialied value was reported on memory bot. See crbug.com/500769
for log.

>    Make a ResourceThrottle for extensions on top of net::URLRequestThrottlerManager.
>
>    net::URLRequestThrottlerManager is used for throttling extensions originated
>    requests. We would like to move it out of net/ and place it in a more appropriate
>    directory. Since content::ResourceThrottle is the standard way to throttle
>    requests, this CL makes URLRequestThrottlerManager into a extensions
>    ResourceThrottle and place it in extensions/browser/. Followup CLs will clean up
>    URLRequestThrottlerManager usage from net/.
>
>    BUG=484241
>
>    Review URL: https://codereview.chromium.org/1171983003
>
>    Cr-Commit-Position: refs/heads/master@{#334457}

BUG=484241, 500769
TBR=xunjieli@chromium.org

Initialize num_flush_callbacks_

BUG=500764
TBR=bubbe@chromium.org

Review URL: https://codereview.chromium.org/1191543004

Cr-Commit-Position: refs/heads/master@{#334544}

1 files changed, 0 insertions, 76 deletions

diff --git a/extensions/browser/extension_throttle_entry_interface.h b/extensions/browser/extension_throttle_entry_interface.h
deleted file mode 100644
index 99989b8..0000000
--- a/extensions/browser/extension_throttle_entry_interface.h
+++ /dev/null
@@ -1,76 +0,0 @@
-// 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.
-
-#ifndef EXTENSIONS_BROWSER_EXTENSION_THROTTLE_ENTRY_INTERFACE_H_
-#define EXTENSIONS_BROWSER_EXTENSION_THROTTLE_ENTRY_INTERFACE_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/time/time.h"
-#include "net/base/net_export.h"
-
-namespace net {
-class URLRequest;
-}  // namespace net
-
-namespace extensions {
-
-// Interface provided on entries of the URL request throttler manager.
-class ExtensionThrottleEntryInterface
-    : public base::RefCountedThreadSafe<ExtensionThrottleEntryInterface> {
- public:
-  ExtensionThrottleEntryInterface() {}
-
-  // Returns true when we have encountered server errors and are doing
-  // exponential back-off, unless the request has load flags that mean
-  // it is likely to be user-initiated, or the NetworkDelegate returns
-  // false for |CanThrottleRequest(request)|.
-  //
-  // URLRequestHttpJob checks this method prior to every request; it
-  // cancels requests if this method returns true.
-  virtual bool ShouldRejectRequest(const net::URLRequest& request) const = 0;
-
-  // Calculates a recommended sending time for the next request and reserves it.
-  // The sending time is not earlier than the current exponential back-off
-  // release time or |earliest_time|. Moreover, the previous results of
-  // the method are taken into account, in order to make sure they are spread
-  // properly over time.
-  // Returns the recommended delay before sending the next request, in
-  // milliseconds. The return value is always positive or 0.
-  // Although it is not mandatory, respecting the value returned by this method
-  // is helpful to avoid traffic overload.
-  virtual int64 ReserveSendingTimeForNextRequest(
-      const base::TimeTicks& earliest_time) = 0;
-
-  // Returns the time after which requests are allowed.
-  virtual base::TimeTicks GetExponentialBackoffReleaseTime() const = 0;
-
-  // This method needs to be called each time a response is received.
-  virtual void UpdateWithResponse(int status_code) = 0;
-
-  // Lets higher-level modules, that know how to parse particular response
-  // bodies, notify of receiving malformed content for the given URL. This will
-  // be handled by the throttler as if an HTTP 503 response had been received to
-  // the request, i.e. it will count as a failure, unless the HTTP response code
-  // indicated is already one of those that will be counted as an error.
-  virtual void ReceivedContentWasMalformed(int response_code) = 0;
-
-  // Get the URL ID associated with his entry. Should only be used for debugging
-  // purpose.
-  virtual const std::string& GetURLIdForDebugging() const = 0;
-
- protected:
-  friend class base::RefCountedThreadSafe<ExtensionThrottleEntryInterface>;
-  virtual ~ExtensionThrottleEntryInterface() {}
-
- private:
-  friend class base::RefCounted<ExtensionThrottleEntryInterface>;
-  DISALLOW_COPY_AND_ASSIGN(ExtensionThrottleEntryInterface);
-};
-
-}  // namespace extensions
-
-#endif  // EXTENSIONS_BROWSER_EXTENSION_THROTTLE_ENTRY_INTERFACE_H_