Refactor renderer-side script injection

extensions/renderer/user_script_scheduler.h

Index: extensions/renderer/user_script_scheduler.h
diff --git a/extensions/renderer/user_script_scheduler.h b/extensions/renderer/user_script_scheduler.h
deleted file mode 100644
index 4e8a45ba702bb216eb66c989ca1cd693c70a11ae..0000000000000000000000000000000000000000
--- a/extensions/renderer/user_script_scheduler.h
+++ /dev/null
@@ -1,95 +0,0 @@
-// 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.
-
-#ifndef EXTENSIONS_RENDERER_USER_SCRIPT_SCHEDULER_H_
-#define EXTENSIONS_RENDERER_USER_SCRIPT_SCHEDULER_H_
-
-#include <map>
-#include <queue>
-
-#include "base/memory/linked_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "extensions/common/user_script.h"
-
-class RenderView;
-struct ExtensionMsg_ExecuteCode_Params;
-
-namespace blink {
-class WebFrame;
-}
-
-namespace extensions {
-class Dispatcher;
-
-// Implements support for injecting scripts at different times in the document
-// loading process. The different possible time are described in
-// UserScript::RunLocation.
-//
-// Currently, determining idleness is simple: it is whichever of the following
-// happens first:
-//
-// a) When the initial DOM for a page is complete + kUserScriptIdleTimeout,
-// b) or when the page has completely loaded including all subresources.
-//
-// The intent of this mechanism is to prevent user scripts from slowing down
-// fast pages (run after load), while still allowing them to run relatively
-// timely for pages with lots of slow subresources.
-//
-// NOTE: this class does not inherit from RenderViewObserver on purpose.  The
-// reason is that this object is per frame, and a frame can move across
-// RenderViews thanks to adoptNode.  So we have each RenderView's
-// ExtensionHelper proxy these calls to the renderer process' Dispatcher,
-// which contains the mapping from WebFrame to us.
-class UserScriptScheduler {
- public:
-  UserScriptScheduler(blink::WebFrame* frame, Dispatcher* dispatcher);
-  ~UserScriptScheduler();
-
-  void ExecuteCode(const ExtensionMsg_ExecuteCode_Params& params);
-  void DidCreateDocumentElement();
-  void DidFinishDocumentLoad();
-  void DidFinishLoad();
-  void DidStartProvisionalLoad();
-
- private:
-  typedef
-    std::queue<linked_ptr<ExtensionMsg_ExecuteCode_Params> >
-    ExecutionQueue;
-
-  // Run user scripts, except if they've already run for this frame, or the
-  // frame has been destroyed.
-  void MaybeRun();
-
-  // Backend for the IPC Message ExecuteCode in addition to being used
-  // internally.
-  void ExecuteCodeImpl(const ExtensionMsg_ExecuteCode_Params& params);
-
-  // Get all child frames of parent_frame, returned by frames_vector.
-  bool GetAllChildFrames(blink::WebFrame* parent_frame,
-                         std::vector<blink::WebFrame*>* frames_vector) const;
-
-  // Call to signify thet the idle timeout has expired.
-  void IdleTimeout();
-
-  base::WeakPtrFactory<UserScriptScheduler> weak_factory_;
-
-  // The Frame we will run scripts in.
-  blink::WebFrame* frame_;
-
-  // The current location in the document loading process.
-  // Will be UserScript::UNDEFINED if it is before any scripts should be run.
-  UserScript::RunLocation current_location_;
-
-  // Whether we have already run the idle scripts.
-  bool has_run_idle_;
-
-  // This is only used if we're for the main frame.
-  std::map<UserScript::RunLocation, ExecutionQueue> pending_execution_map_;
-
-  Dispatcher* dispatcher_;
-};
-
-}  // namespace extensions
-
-#endif  // EXTENSIONS_RENDERER_USER_SCRIPT_SCHEDULER_H_