Remove dependency of power_save_blocker_android on various content bits

content/browser/power_save_blocker_impl.h

 // Copyright (c) 2013 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_POWER_SAVE_BLOCKER_IMPL_H_
 #define CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
 #include "build/build_config.h"
 #include "content/public/browser/power_save_blocker.h"
 
+#if defined(OS_ANDROID)
+#include "ui/android/view_android.h"
+#endif  // OS_ANDROID
+
 namespace content {
 
 class WebContents;
 
 class PowerSaveBlockerImpl : public PowerSaveBlocker {
  public:
   PowerSaveBlockerImpl(
       PowerSaveBlockerType type,
       Reason reason,
       const std::string& description,
       scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> blocking_task_runner);
   ~PowerSaveBlockerImpl() override;
 
 #if defined(OS_ANDROID)
-  // In Android platform, the kPowerSaveBlockPreventDisplaySleep type of
-  // PowerSaveBlocker should associated with a WebContents, so the blocker
-  // could be removed by platform if the WebContents is hidden.
-  void InitDisplaySleepBlocker(WebContents* web_contents);
+  // On Android, the kPowerSaveBlockPreventDisplaySleep type of
+  // PowerSaveBlocker should associated with a View, so the blocker can be
+  // removed by the platform.
+  void InitDisplaySleepBlocker(base::WeakPtr<ui::ViewAndroid> view_android);
 #endif
 
  private:
   class Delegate;
 
   // Implementations of this class may need a second object with different
   // lifetime than the RAII container, or additional storage. This member is
   // here for that purpose. If not used, just define the class as an empty
   // RefCounted (or RefCountedThreadSafe) like so to make it compile:
   // class PowerSaveBlocker::Delegate
@@ skipping 13 matching lines @@
 
   scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerSaveBlockerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_POWER_SAVE_BLOCKER_IMPL_H_