Remove Navigation Transitions from Chromium

content/browser/transition_request_manager.h

Index: content/browser/transition_request_manager.h
diff --git a/content/browser/transition_request_manager.h b/content/browser/transition_request_manager.h
deleted file mode 100644
index 65b57924134e790207ed6297c7abdd13741e77eb..0000000000000000000000000000000000000000
--- a/content/browser/transition_request_manager.h
+++ /dev/null
@@ -1,139 +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 CONTENT_BROWSER_TRANSITION_REQUEST_MANAGER_H_
-#define CONTENT_BROWSER_TRANSITION_REQUEST_MANAGER_H_
-
-#include <map>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "content/common/content_export.h"
-#include "content/public/common/transition_element.h"
-#include "ui/gfx/geometry/rect.h"
-#include "url/gurl.h"
-
-template <typename T>
-struct DefaultSingletonTraits;
-
-namespace net {
-class HttpResponseHeaders;
-}
-class GURL;
-
-namespace content {
-
-// This struct passes data about an imminent transition between threads.
-struct TransitionLayerData {
-  CONTENT_EXPORT TransitionLayerData();
-  CONTENT_EXPORT ~TransitionLayerData();
-
-  std::string markup;
-  std::string css_selector;
-  std::vector<TransitionElement> elements;
-  scoped_refptr<net::HttpResponseHeaders> response_headers;
-  GURL request_url;
-};
-
-// TransitionRequestManager is used to handle bookkeeping for transition
-// requests and responses.
-//
-// TransitionRequestManager is a singleton and should only be accessed on the IO
-// thread.
-//
-class TransitionRequestManager {
- public:
-  // Returns the singleton instance.
-  CONTENT_EXPORT static TransitionRequestManager* GetInstance();
-
-  // Parses out any transition-entering-stylesheet link headers from the
-  // response headers.
-  CONTENT_EXPORT static void ParseTransitionStylesheetsFromHeaders(
-      const scoped_refptr<net::HttpResponseHeaders>& headers,
-      std::vector<GURL>& entering_stylesheets,
-      const GURL& resolve_address);
-
-  // Get pending transition request data from RenderFrameHost specified by the
-  // given IDs and return true if the data exists. For web to web transition, we
-  // will have to delay the response until the embedder resumes the request if
-  // the data exists.
-  CONTENT_EXPORT bool GetPendingTransitionRequest(
-      int render_process_id,
-      int render_frame_id,
-      const GURL& request_url,
-      TransitionLayerData* transition_data);
-
-  // Adds pending request data for a transition navigation for the
-  // RenderFrameHost specified by the given IDs.
-  CONTENT_EXPORT void AddPendingTransitionRequestData(
-      int render_process_id,
-      int render_frame_id,
-      const std::string& allowed_destination_host_pattern,
-      const std::string& css_selector,
-      const std::string& markup,
-      const std::vector<TransitionElement>& elements);
-  CONTENT_EXPORT void AddPendingTransitionRequestDataForTesting(
-      int render_process_id,
-      int render_frame_id);
-
-  CONTENT_EXPORT void ClearPendingTransitionRequestData(int render_process_id,
-                                                        int render_frame_id);
-
-  // The maximum number of elements is meant to avoid passing arbitrarily large
-  // amount of objects across the IPC boundary.
-  static const int kMaxNumOfElements = 1024;
-
- private:
-  class TransitionRequestData {
-   public:
-    TransitionRequestData();
-    ~TransitionRequestData();
-    void AddEntry(const std::string& allowed_destination_host_pattern,
-                  const std::string& selector,
-                  const std::string& markup,
-                  const std::vector<TransitionElement>& elements);
-    bool FindEntry(const GURL& request_url,
-                    TransitionLayerData* transition_data);
-
-   private:
-    struct AllowedEntry {
-      // These strings could have originated from a compromised renderer,
-      // and should not be trusted or assumed safe. They are only used within
-      // a sandboxed iframe with scripts disabled.
-      std::string allowed_destination_host_pattern;
-      std::string css_selector;
-      std::string markup;
-      std::vector<TransitionElement> elements;
-
-      AllowedEntry(const std::string& allowed_destination_host_pattern,
-                   const std::string& css_selector,
-                   const std::string& markup,
-                   const std::vector<TransitionElement>& elements);
-      ~AllowedEntry();
-    };
-    std::vector<AllowedEntry> allowed_entries_;
-  };
-
-  friend struct DefaultSingletonTraits<TransitionRequestManager>;
-  typedef std::map<std::pair<int, int>, TransitionRequestData>
-      RenderFrameRequestDataMap;
-
-  TransitionRequestManager();
-  ~TransitionRequestManager();
-
-  // Map of (render_process_host_id, render_frame_id) pairs of all
-  // RenderFrameHosts that have pending cross-site requests and their data.
-  // Used to pass information to the CrossSiteResourceHandler without doing a
-  // round-trip between IO->UI->IO threads.
-  RenderFrameRequestDataMap pending_transition_frames_;
-
-  DISALLOW_COPY_AND_ASSIGN(TransitionRequestManager);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_TRANSITION_REQUEST_MANAGER_H_