Remove page id from ViewHostMsg_UpdateTargetURL; no one actually uses it on the browser side.

components/web_contents_delegate_android/web_contents_delegate_android.cc

 // 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.
 
 #include "components/web_contents_delegate_android/web_contents_delegate_android.h"
 
 #include <android/keycodes.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 257 matching lines @@
       line_no,
       jsource_id.obj());
 }
 
 // This is either called from TabContents::DidNavigateMainFramePostCommit() with
 // an empty GURL or responding to RenderViewHost::OnMsgUpateTargetURL(). In
 // Chrome, the latter is not always called, especially not during history
 // navigation. So we only handle the first case and pass the source TabContents'
 // url to Java to update the UI.
 void WebContentsDelegateAndroid::UpdateTargetURL(WebContents* source,
-                                                 int32 page_id,
                                                  const GURL& url) {
   if (!url.is_empty())
     return;
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = GetJavaDelegate(env);
   if (obj.is_null())
     return;
   ScopedJavaLocalRef<jstring> java_url =
       ConvertUTF8ToJavaString(env, source->GetURL().spec());
   Java_WebContentsDelegateAndroid_onUpdateUrl(env,
@@ skipping 94 matching lines @@
 // Native JNI methods
 // ----------------------------------------------------------------------------
 
 // Register native methods
 
 bool RegisterWebContentsDelegateAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace web_contents_delegate_android