chrome/browser/android/metrics/variations_session.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/android/metrics/variations_session.h"
   6
   7 #include "base/android/jni_string.h"
   8 #include "chrome/browser/browser_process.h"
   9 #include "chrome/browser/metrics/variations/variations_service.h"
  10 #include "jni/VariationsSession_jni.h"
  11
  12 namespace {
  13
  14 // Tracks whether VariationsService::OnAppEnterForeground() has been called
  15 // previously, in order to set the restrict mode param before the first call.
  16 bool g_on_app_enter_foreground_called = false;
  17
  18 }  // namespace
  19
  20 static void StartVariationsSession(JNIEnv* env,
  21                                    jobject obj,
  22                                    jstring jrestrict_mode) {
  23   DCHECK(g_browser_process);
  24
  25   chrome_variations::VariationsService* variations_service =
  26       g_browser_process->variations_service();
  27   // Triggers an OnAppEnterForeground on the VariationsService. This may fetch
  28   // a new seed.
  29   if (variations_service) {
  30     std::string restrict_mode =
  31         base::android::ConvertJavaStringToUTF8(env, jrestrict_mode);
  32     if (!restrict_mode.empty() && !g_on_app_enter_foreground_called)
  33       variations_service->SetRestrictMode(restrict_mode);
  34     variations_service->OnAppEnterForeground();
  35     g_on_app_enter_foreground_called = true;
  36   }
  37 }
  38
  39 namespace chrome {
  40 namespace android {
  41
  42 // Register native methods
  43 bool RegisterVariationsSession(JNIEnv* env) { return RegisterNativesImpl(env); }
  44
  45 }  // namespace android
  46 }  // namespace chrome