Move webpreferences.* from webkit/ to content/

android_webview/native/aw_settings.h

Index: android_webview/native/aw_settings.h
diff --git a/android_webview/native/aw_settings.h b/android_webview/native/aw_settings.h
index 92bf658ad505446784b840f7625eda26f77956a6..dfef05eb2d7438dae8bdc7c86a626b15f36f9083 100644
--- a/android_webview/native/aw_settings.h
+++ b/android_webview/native/aw_settings.h
@@ -12,7 +12,9 @@
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
 
+namespace content{
 struct WebPreferences;
+}
 
 namespace android_webview {
 
@@ -37,7 +39,7 @@ class AwSettings : public content::WebContentsObserver {
   void UpdateFormDataPreferencesLocked(JNIEnv* env, jobject obj);
   void UpdateRendererPreferencesLocked(JNIEnv* env, jobject obj);
 
-  void PopulateWebPreferences(WebPreferences* web_prefs);
+  void PopulateWebPreferences(content::WebPreferences* web_prefs);
 
  private:
   AwRenderViewHostExt* GetAwRenderViewHostExt();