[App banners] Start adding unit tets

chrome/browser/android/banners/app_banner_manager.h

 // 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 CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_MANAGER_H_
 #define CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_MANAGER_H_
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/time/time.h"
 #include "chrome/browser/android/banners/app_banner_infobar_delegate.h"
 #include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
 #include "chrome/browser/ui/android/infobars/app_banner_infobar.h"
 #include "components/infobars/core/infobar_manager.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/manifest.h"
 
 namespace content {
 struct FrameNavigateParams;
 struct LoadCommittedDetails;
@@ skipping 63 matching lines @@
                              jobject obj,
                              jobject japp_data,
                              jstring japp_title,
                              jstring japp_package,
                              jstring jicon_url);
 
   // Fetches the icon at the given URL asynchronously.
   // Returns |false| if this couldn't be kicked off.
   bool FetchIcon(const GURL& image_url);
 
+  // Return how many fetchers are active.
+  int GetNumActiveFetchers(JNIEnv* env, jobject jobj);
+
+  // Returns the current time.
+  static base::Time GetCurrentTime();
+
   // WebContentsObserver overrides.
   void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override;
   void DidFinishLoad(content::RenderFrameHost* render_frame_host,
                      const GURL& validated_url) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // BitmapFetcherDelegate overrides.
   void OnFetchComplete(const GURL url, const SkBitmap* bitmap) override;
@@ skipping 47 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(AppBannerManager);
 };  // class AppBannerManager
 
 // Register native methods
 bool RegisterAppBannerManager(JNIEnv* env);
 
 }  // namespace banners
 
 #endif  // CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_MANAGER_H_