Fix wrong explicit marked for zero-parameter constructor

android_webview/browser/aw_content_browser_client.h

 // Copyright (c) 2012 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 ANDROID_WEBVIEW_BROWSER_AW_CONTENT_BROWSER_CLIENT_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "content/public/browser/content_browser_client.h"
 
 namespace android_webview {
 
 class AwBrowserContext;
 
 class AwContentBrowserClient : public content::ContentBrowserClient {
  public:
   // This is what AwContentBrowserClient::GetAcceptLangs uses.
   static std::string GetAcceptLangsImpl();
 
   // Deprecated: use AwBrowserContext::GetDefault() instead.
   static AwBrowserContext* GetAwBrowserContext();
 
-  explicit AwContentBrowserClient();
+  AwContentBrowserClient();
   ~AwContentBrowserClient() override;
 
   // Allows AwBrowserMainParts to initialize a BrowserContext at the right
   // moment during startup. AwContentBrowserClient owns the result.
   AwBrowserContext* InitBrowserContext();
 
   content::BrowserMainParts* CreateBrowserMainParts(
       const content::MainFunctionParams& parameters) override;
   content::WebContentsViewDelegate* GetWebContentsViewDelegate(
       content::WebContents* web_contents) override;
@@ skipping 97 matching lines @@
   // Android WebView currently has a single global (non-off-the-record) browser
   // context.
   std::unique_ptr<AwBrowserContext> browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(AwContentBrowserClient);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_CONTENT_BROWSER_CLIENT_H_