Add metrics for triggering of JS dialogs on Android.

chrome/browser/android/tab_android.cc

 // Copyright 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 "chrome/browser/android/tab_android.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 149 matching lines @@
   return base::android::ConvertJavaStringToUTF16(
       Java_Tab_getTitle(env, weak_java_tab_.get(env)));
 }
 
 GURL TabAndroid::GetURL() const {
   JNIEnv* env = base::android::AttachCurrentThread();
   return GURL(base::android::ConvertJavaStringToUTF8(
       Java_Tab_getUrl(env, weak_java_tab_.get(env))));
 }
 
+bool TabAndroid::IsUserInteractable() const {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  return Java_Tab_isUserInteractable(env, weak_java_tab_.get(env));
+}
+
 bool TabAndroid::LoadIfNeeded() {
   JNIEnv* env = base::android::AttachCurrentThread();
   return Java_Tab_loadIfNeeded(env, weak_java_tab_.get(env));
 }
 
 Profile* TabAndroid::GetProfile() const {
   if (!web_contents())
     return NULL;
 
   return Profile::FromBrowserContext(web_contents()->GetBrowserContext());
@@ skipping 579 matching lines @@
 static void Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   TRACE_EVENT0("native", "TabAndroid::Init");
   // This will automatically bind to the Java object and pass ownership there.
   new TabAndroid(env, obj);
 }
 
 // static
 bool TabAndroid::RegisterTabAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }