Add missing using statements for JNI types.

chrome/browser/android/compositor/compositor_view.cc

 // Copyright 2015 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 "chrome/browser/android/compositor/compositor_view.h"
 
 #include <android/bitmap.h>
 #include <android/native_window_jni.h>
 
 #include <memory>
@@ skipping 19 matching lines @@
 #include "content/public/browser/child_process_data.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/process_type.h"
 #include "jni/CompositorView_jni.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/android/resources/resource_manager.h"
 #include "ui/android/resources/ui_resource_provider.h"
 #include "ui/android/window_android.h"
 #include "ui/gfx/android/java_bitmap.h"
 
+using base::android::JavaParamRef;
+
 namespace chrome {
 namespace android {
 
 jlong Init(JNIEnv* env,
            const JavaParamRef<jobject>& obj,
            jboolean low_mem_device,
            jlong native_window_android,
            const JavaParamRef<jobject>& jlayer_title_cache,
            const JavaParamRef<jobject>& jtab_content_manager) {
   CompositorView* view;
@@ skipping 214 matching lines @@
   // through here but through BrowserChildProcessHostDisconnected() instead.
 }
 
 // Register native methods
 bool RegisterCompositorView(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android
 }  // namespace chrome