[UNOp2][Android] Add support for long in the Android pref service

This will be used in follow-up CLs to record prefs related to the user
declining top opt-in to history sync

Bug: 331568233
Change-Id: Ieac35e7170598fbb827b57a56ba293506bfe960e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5600005
Commit-Queue: Theresa Sullivan <twellington@chromium.org>
Auto-Submit: Samar Chehade-Lepleux <samarchehade@google.com>
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Reviewed-by: Theresa Sullivan <twellington@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1312012}

components/prefs/android/java/src/org/chromium/components/prefs/PrefService.java

@@ -92,6 +92,22 @@ public class PrefService {
         PrefServiceJni.get().setDouble(mNativePrefServiceAndroid, preference, value);
     }
 
+    /**
+     * @param preference The name of the preference.
+     * @return value The value of the specified preference.
+     */
+    public long getLong(@NonNull String preference) {
+        return PrefServiceJni.get().getLong(mNativePrefServiceAndroid, preference);
+    }
+
+    /**
+     * @param preference The name of the preference.
+     * @param value The value the specified preference will be set to.
+     */
+    public void setLong(@NonNull String preference, long value) {
+        PrefServiceJni.get().setLong(mNativePrefServiceAndroid, preference, value);
+    }
+
     /**
      * @param preference The name of the preference.
      * @return value The value of the specified preference.
@@ -144,6 +160,10 @@ public class PrefService {
 
         void setDouble(long nativePrefServiceAndroid, String preference, double value);
 
+        long getLong(long nativePrefServiceAndroid, String preference);
+
+        void setLong(long nativePrefServiceAndroid, String preference, long value);
+
         String getString(long nativePrefServiceAndroid, String preference);
 
         void setString(long nativePrefServiceAndroid, String preference, String value);

components/prefs/android/java/src/org/chromium/components/prefs/PrefServiceTest.java

@@ -95,6 +95,24 @@ public class PrefServiceTest {
         verify(mNativeMock).setDouble(eq(NATIVE_HANDLE), eq(PREF), eq(value));
     }
 
+    @Test
+    public void testGetLong() {
+        long expected = 123L;
+
+        doReturn(expected).when(mNativeMock).getLong(NATIVE_HANDLE, PREF);
+
+        assertEquals(expected, mPrefService.getLong(PREF));
+    }
+
+    @Test
+    public void testSetLong() {
+        long value = 123L;
+
+        mPrefService.setLong(PREF, value);
+
+        verify(mNativeMock).setLong(eq(NATIVE_HANDLE), eq(PREF), eq(value));
+    }
+
     @Test
     public void testGetString() {
         String expected = "foo";

components/prefs/android/pref_service_android.cc

@@ -107,6 +107,19 @@ void PrefServiceAndroid::SetDouble(JNIEnv* env,
       base::android::ConvertJavaStringToUTF8(env, j_preference), j_value);
 }
 
+jlong PrefServiceAndroid::GetLong(JNIEnv* env,
+                                  const JavaParamRef<jstring>& j_preference) {
+  return pref_service_->GetInt64(
+      base::android::ConvertJavaStringToUTF8(env, j_preference));
+}
+
+void PrefServiceAndroid::SetLong(JNIEnv* env,
+                                 const JavaParamRef<jstring>& j_preference,
+                                 const jlong j_value) {
+  pref_service_->SetInt64(
+      base::android::ConvertJavaStringToUTF8(env, j_preference), j_value);
+}
+
 ScopedJavaLocalRef<jstring> PrefServiceAndroid::GetString(
     JNIEnv* env,
     const JavaParamRef<jstring>& j_preference) {

components/prefs/android/pref_service_android.h

@@ -46,6 +46,11 @@ class COMPONENTS_PREFS_EXPORT PrefServiceAndroid {
   void SetDouble(JNIEnv* env,
                  const base::android::JavaParamRef<jstring>& j_preference,
                  const jdouble j_value);
+  jlong GetLong(JNIEnv* env,
+                const base::android::JavaParamRef<jstring>& j_preference);
+  void SetLong(JNIEnv* env,
+               const base::android::JavaParamRef<jstring>& j_preference,
+               const jlong j_value);
   base::android::ScopedJavaLocalRef<jstring> GetString(
       JNIEnv* env,
       const base::android::JavaParamRef<jstring>& j_preference);