Add Quota.TimeSinceOriginEvicted UMA histogram.

content/browser/quota/quota_database_unittest.cc

Index: content/browser/quota/quota_database_unittest.cc
diff --git a/content/browser/quota/quota_database_unittest.cc b/content/browser/quota/quota_database_unittest.cc
index 84af01707c26e7af10a991cb39ec72296bc736c1..2ec60ed880f7ab3688bb8690f0ea99ec6201a231 100644
--- a/content/browser/quota/quota_database_unittest.cc
+++ b/content/browser/quota/quota_database_unittest.cc
@@ -294,6 +294,61 @@ class QuotaDatabaseTest : public testing::Test {
     EXPECT_EQ(0U, origins.count(kOrigin3));
   }
 
+  void OriginLastEvicted(const base::FilePath& kDbFile) {
+    QuotaDatabase db(kDbFile);
+    ASSERT_TRUE(db.LazyOpen(true));
+
+    const GURL kOrigin1("http://a/");
+    const GURL kOrigin2("http://b/");
+    const GURL kOrigin3("http://c/");
+
+    base::Time last_eviction_time;
+    EXPECT_TRUE(db.GetOriginLastEvictionTime(kOrigin1, kStorageTypeTemporary,
+                                             &last_eviction_time));
+    EXPECT_EQ(base::Time(), last_eviction_time);
+
+    // Report last eviction time for the test origins.
+    EXPECT_TRUE(db.SetOriginLastEvictionTime(
+        kOrigin1, kStorageTypeTemporary, base::Time::FromInternalValue(10)));
+    EXPECT_TRUE(db.SetOriginLastEvictionTime(
+        kOrigin2, kStorageTypeTemporary, base::Time::FromInternalValue(20)));
+    EXPECT_TRUE(db.SetOriginLastEvictionTime(
+        kOrigin3, kStorageTypeTemporary, base::Time::FromInternalValue(30)));
+
+    EXPECT_TRUE(db.GetOriginLastEvictionTime(kOrigin1, kStorageTypeTemporary,
+                                             &last_eviction_time));
+    EXPECT_EQ(base::Time::FromInternalValue(10), last_eviction_time);
+    EXPECT_TRUE(db.GetOriginLastEvictionTime(kOrigin2, kStorageTypeTemporary,
+                                             &last_eviction_time));
+    EXPECT_EQ(base::Time::FromInternalValue(20), last_eviction_time);
+    EXPECT_TRUE(db.GetOriginLastEvictionTime(kOrigin3, kStorageTypeTemporary,
+                                             &last_eviction_time));
+    EXPECT_EQ(base::Time::FromInternalValue(30), last_eviction_time);
+
+    // Delete last eviction times for the test origins.
+    EXPECT_TRUE(
+        db.DeleteOriginLastEvictionTime(kOrigin1, kStorageTypeTemporary));
+    EXPECT_TRUE(
+        db.DeleteOriginLastEvictionTime(kOrigin2, kStorageTypeTemporary));
+    EXPECT_TRUE(
+        db.DeleteOriginLastEvictionTime(kOrigin3, kStorageTypeTemporary));
+
+    last_eviction_time = base::Time();
+    EXPECT_TRUE(db.GetOriginLastEvictionTime(kOrigin1, kStorageTypeTemporary,
+                                             &last_eviction_time));
+    EXPECT_EQ(base::Time(), last_eviction_time);
+    EXPECT_TRUE(db.GetOriginLastEvictionTime(kOrigin2, kStorageTypeTemporary,
+                                             &last_eviction_time));
+    EXPECT_EQ(base::Time(), last_eviction_time);
+    EXPECT_TRUE(db.GetOriginLastEvictionTime(kOrigin3, kStorageTypeTemporary,
+                                             &last_eviction_time));
+    EXPECT_EQ(base::Time(), last_eviction_time);
+
+    // Deleting an origin that is not present should not fail.
+    EXPECT_TRUE(db.DeleteOriginLastEvictionTime(GURL("http://notpresent.com"),
+                                                kStorageTypeTemporary));
+  }
+
   void RegisterInitialOriginInfo(const base::FilePath& kDbFile) {
     QuotaDatabase db(kDbFile);
 
@@ -541,6 +596,14 @@ TEST_F(QuotaDatabaseTest, OriginLastModifiedSince) {
   OriginLastModifiedSince(base::FilePath());
 }
 
+TEST_F(QuotaDatabaseTest, OriginLastEvicted) {
+  base::ScopedTempDir data_dir;
+  ASSERT_TRUE(data_dir.CreateUniqueTempDir());
+  const base::FilePath kDbFile = data_dir.path().AppendASCII(kDBFileName);
+  OriginLastEvicted(kDbFile);
+  OriginLastEvicted(base::FilePath());
+}
+
 TEST_F(QuotaDatabaseTest, BootstrapFlag) {
   base::ScopedTempDir data_dir;
   ASSERT_TRUE(data_dir.CreateUniqueTempDir());