Add UMA metric to track the time elapsed since a WebAPK was last launched
This CL also:
Adds a new SharedPreferences property "has_been_launched" to track whether the
WebAPK/Webapp has been launched from the home screen.
BUG=730201
Test=WebApkIntegrationTest.*, WebappModeTest.*
Review-Url: https://codereview.chromium.org/2930553002
Cr-Commit-Position: refs/heads/master@{#483485}
diff --git a/base/android/record_histogram.cc b/base/android/record_histogram.cc
index 1a207a18..0561986 100644
--- a/base/android/record_histogram.cc
+++ b/base/android/record_histogram.cc
@@ -315,6 +315,20 @@
return samples->GetCount(static_cast<int>(sample));
}
+jint GetHistogramTotalCountForTesting(
+ JNIEnv* env,
+ const JavaParamRef<jclass>& clazz,
+ const JavaParamRef<jstring>& histogram_name) {
+ HistogramBase* histogram = StatisticsRecorder::FindHistogram(
+ android::ConvertJavaStringToUTF8(env, histogram_name));
+ if (histogram == nullptr) {
+ // No samples have been recorded for this histogram.
+ return 0;
+ }
+
+ return histogram->SnapshotSamples()->TotalCount();
+}
+
bool RegisterRecordHistogram(JNIEnv* env) {
return RegisterNativesImpl(env);
}
