arc: Create intermediate directories in c/b/c/arc

chrome/browser/chromeos/arc/arc_navigation_throttle.h

-// Copyright 2016 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 CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_
-#define CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_
-
-#include <memory>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "components/arc/intent_helper/activity_icon_loader.h"
-#include "content/public/browser/navigation_throttle.h"
-#include "mojo/public/cpp/bindings/array.h"
-#include "ui/gfx/image/image.h"
-
-class GURL;
-
-namespace content {
-class NavigationHandle;
-class WebContents;
-}  // namespace content
-
-namespace arc {
-
-// A class that allow us to retrieve ARC app's information and handle URL
-// traffic initiated on Chrome browser, either on Chrome or an ARC's app.
-class ArcNavigationThrottle : public content::NavigationThrottle {
- public:
-  // These enums are used to define the buckets for an enumerated UMA histogram
-  // and need to be synced with histograms.xml. This enum class should also be
-  // treated as append-only.
-  enum class CloseReason : int {
-    ERROR = 0,
-    DIALOG_DEACTIVATED = 1,
-    ALWAYS_PRESSED = 2,
-    JUST_ONCE_PRESSED = 3,
-    PREFERRED_ACTIVITY_FOUND = 4,
-    SIZE,
-    INVALID = SIZE,
-  };
-
-  // Restricts the amount of apps displayed to the user without the need of a
-  // ScrollView.
-  enum { kMaxAppResults = 3 };
-
-  struct AppInfo {
-    AppInfo(gfx::Image img, std::string package, std::string activity)
-        : icon(img), package_name(package), activity_name(activity) {}
-    gfx::Image icon;
-    std::string package_name;
-    std::string activity_name;
-  };
-
-  using ShowIntentPickerCallback = base::Callback<void(
-      content::WebContents* web_contents,
-      const std::vector<AppInfo>& app_info,
-      const base::Callback<void(const std::string&, CloseReason)>& cb)>;
-  ArcNavigationThrottle(content::NavigationHandle* navigation_handle,
-                        const ShowIntentPickerCallback& show_intent_picker_cb);
-  ~ArcNavigationThrottle() override;
-
-  static bool ShouldOverrideUrlLoadingForTesting(const GURL& previous_url,
-                                                 const GURL& current_url);
-
-  // Finds |selected_app_package| from the |handlers| array and returns the
-  // index. If the app is not found, returns |handlers.size()|.
-  static size_t GetAppIndex(
-      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers,
-      const std::string& selected_app_package);
-
-  static bool IsAppAvailableForTesting(
-      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers);
-  static size_t FindPreferredAppForTesting(
-      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers);
-  static bool IsSwapElementsNeededForTesting(
-      const mojo::Array<mojom::IntentHandlerInfoPtr>& handlers,
-      std::pair<size_t, size_t>* out_indices);
-
- private:
-  // content::Navigation implementation:
-  NavigationThrottle::ThrottleCheckResult WillStartRequest() override;
-  NavigationThrottle::ThrottleCheckResult WillRedirectRequest() override;
-
-  NavigationThrottle::ThrottleCheckResult HandleRequest();
-  void OnAppCandidatesReceived(
-      mojo::Array<mojom::IntentHandlerInfoPtr> handlers);
-  void OnAppIconsReceived(
-      mojo::Array<mojom::IntentHandlerInfoPtr> handlers,
-      std::unique_ptr<ActivityIconLoader::ActivityToIconsMap> icons);
-  void OnIntentPickerClosed(mojo::Array<mojom::IntentHandlerInfoPtr> handlers,
-                            const std::string& selected_app_package,
-                            CloseReason close_reason);
-  // A callback object that allow us to display an IntentPicker when Run() is
-  // executed, it also allow us to report the user's selection back to
-  // OnIntentPickerClosed().
-  ShowIntentPickerCallback show_intent_picker_callback_;
-
-  // A cache of the action the user took the last time this navigation throttle
-  // popped up the intent picker dialog.  If the dialog has never been popped up
-  // before, this will have a value of CloseReason::INVALID.  Used to avoid
-  // popping up the dialog multiple times on chains of multiple redirects.
-  CloseReason previous_user_action_;
-
-  // This has to be the last member of the class.
-  base::WeakPtrFactory<ArcNavigationThrottle> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ArcNavigationThrottle);
-};
-
-}  // namespace arc
-
-#endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_NAVIGATION_THROTTLE_H_