Android: Remove ContentViewCore::GetLayer() from public interface

chrome/browser/android/compositor/tab_content_manager.h

 // Copyright 2014 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_BROWSER_ANDROID_COMPOSITOR_TAB_CONTENT_MANAGER_H_
 #define CHROME_BROWSER_ANDROID_COMPOSITOR_TAB_CONTENT_MANAGER_H_
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
@@ skipping 59 matching lines @@
   // Callback for when the thumbnail decompression for tab_id is done.
   void OnFinishDecompressThumbnail(int tab_id, bool success, SkBitmap bitmap);
   // JNI methods.
   jboolean HasFullCachedThumbnail(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj,
       jint tab_id);
   void CacheTab(JNIEnv* env,
                 const base::android::JavaParamRef<jobject>& obj,
                 const base::android::JavaParamRef<jobject>& tab,
-                const base::android::JavaParamRef<jobject>& content_view_core,
                 jfloat thumbnail_scale);
   void CacheTabWithBitmap(JNIEnv* env,
                           const base::android::JavaParamRef<jobject>& obj,
                           const base::android::JavaParamRef<jobject>& tab,
                           const base::android::JavaParamRef<jobject>& bitmap,
                           jfloat thumbnail_scale);
   void InvalidateIfChanged(JNIEnv* env,
                            const base::android::JavaParamRef<jobject>& obj,
                            jint tab_id,
                            const base::android::JavaParamRef<jstring>& jurl);
@@ skipping 32 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TabContentManager);
 };
 
 bool RegisterTabContentManager(JNIEnv* env);
 
 }  // namespace android
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_TAB_CONTENT_MANAGER_H_