Convert //base to use std::unique_ptr

chrome/browser/android/bottombar/overlay_panel_content.h

 // Copyright 2015 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_BOTTOMBAR_OVERLAY_PANEL_CONTENT_H_
 #define CHROME_BROWSER_ANDROID_BOTTOMBAR_OVERLAY_PANEL_CONTENT_H_
 
 #include "base/android/jni_android.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"

[Nico, 2016/04/04 17:14:56]

a) unused
b) why does this add scoped_ptr, not memory?

[dcheng, 2016/04/04 17:43:39]

The IWYU fixes were all automated using a poor man's version of IWYU (basically
I have a script that runs in a loop trying to build: every time it hits a
compile error, it blindly inserts an #include for scoped_ptr.h). Trying to
convert these over to std::unique_ptr<T> as well is mostly a non-goal in this
CL, since I wanted to limit the scope of the actual conversion to //base. It's
just that //base is widely used and a common avenue for IWYU violations.

While it's possible this will introduce some scoped_ptr usage in
already-converted directories, that's easy enough to clean up in the final pass.

Also, it's not unused, see line 69.

 #include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/android/contextualsearch/contextual_search_context.h"
 
 namespace content {
 class WebContents;
 }  // namespace content
 
 namespace web_contents_delegate_android {
 class WebContentsDelegateAndroid;
 }  // namespace web_contents_delegate_android
@@ skipping 48 matching lines @@
   scoped_ptr<content::WebContents> web_contents_;
   scoped_ptr<web_contents_delegate_android::WebContentsDelegateAndroid>
       web_contents_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(OverlayPanelContent);
 };
 
 bool RegisterOverlayPanelContent(JNIEnv* env);
 
 #endif  // CHROME_BROWSER_ANDROID_BOTTOMBAR_OVERLAY_PANEL_CONTENT_H_