Use contents size for android_webview layout.

android_webview/native/aw_settings.cc

Index: android_webview/native/aw_settings.cc
diff --git a/android_webview/native/aw_settings.cc b/android_webview/native/aw_settings.cc
index 1be87d8211482e006c5ca6f27a7910f9e8734bed..9b6c44c3e0453f5bd66fe879328fd8c307f20bd8 100644
--- a/android_webview/native/aw_settings.cc
+++ b/android_webview/native/aw_settings.cc
@@ -72,7 +72,6 @@ void AwSettings::UpdateEverythingLocked(JNIEnv* env, jobject obj) {
   UpdateWebkitPreferencesLocked(env, obj);
   UpdateUserAgentLocked(env, obj);
   ResetScrollAndScaleState(env, obj);
-  UpdatePreferredSizeMode();
   UpdateFormDataPreferencesLocked(env, obj);
 }
 
@@ -231,12 +230,6 @@ void AwSettings::UpdateInitialPageScaleLocked(JNIEnv* env, jobject obj) {
   }
 }
 
-void AwSettings::UpdatePreferredSizeMode() {
-  if (web_contents()->GetRenderViewHost()) {
-    web_contents()->GetRenderViewHost()->EnablePreferredSizeMode();
-  }
-}
-
 void AwSettings::UpdateFormDataPreferencesLocked(JNIEnv* env, jobject obj) {
   if (!web_contents()) return;
   AwContents* contents = AwContents::FromWebContents(web_contents());