Move enable extensions define to a build flag.

chrome/renderer/content_settings_observer.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 CHROME_RENDERER_CONTENT_SETTINGS_OBSERVER_H_
 #define CHROME_RENDERER_CONTENT_SETTINGS_OBSERVER_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <unordered_map>
 #include <utility>
 
 #include "base/gtest_prod_util.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_types.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_frame_observer_tracker.h"
+#include "extensions/features/features.h"
 #include "third_party/WebKit/public/web/WebContentSettingsClient.h"
 #include "url/gurl.h"
 
 namespace blink {
 class WebFrame;
 class WebSecurityOrigin;
 class WebURL;
 }
 
 namespace extensions {
@@ skipping 75 matching lines @@
   void OnSetAllowRunningInsecureContent(bool allow);
   void OnReloadFrame();
   void OnRequestFileSystemAccessAsyncResponse(int request_id, bool allowed);
 
   // Resets the |content_blocked_| array.
   void ClearBlockedContentSettings();
 
   // Whether the observed RenderFrame is for a platform app.
   bool IsPlatformApp();
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   // If |origin| corresponds to an installed extension, returns that extension.
   // Otherwise returns NULL.
   const extensions::Extension* GetExtension(
       const blink::WebSecurityOrigin& origin) const;
 #endif
 
   // Helpers.
   // True if |render_frame()| contains content that is white-listed for content
   // settings.
   bool IsWhitelistedForContentSettings() const;
   static bool IsWhitelistedForContentSettings(
       const blink::WebSecurityOrigin& origin,
       const GURL& document_url);
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   // Owned by ChromeContentRendererClient and outlive us.
   extensions::Dispatcher* const extension_dispatcher_;
 #endif
 
   // Insecure content may be permitted for the duration of this render view.
   bool allow_running_insecure_content_;
 
   // A pointer to content setting rules stored by the renderer. Normally, the
   // |RendererContentSettingRules| object is owned by
   // |ChromeRenderThreadObserver|. In the tests it is owned by the caller of
@@ skipping 18 matching lines @@
       std::unordered_map<int, blink::WebContentSettingCallbacks>;
   PermissionRequestMap permission_requests_;
 
   // If true, IsWhitelistedForContentSettings will always return true.
   const bool should_whitelist_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSettingsObserver);
 };
 
 #endif  // CHROME_RENDERER_CONTENT_SETTINGS_OBSERVER_H_