Revert "Eliminate all code related to the AutomaticProfileResetter."

chrome/browser/profile_resetter/automatic_profile_resetter_unittest.cc

Index: chrome/browser/profile_resetter/automatic_profile_resetter_unittest.cc
diff --git a/chrome/browser/profile_resetter/automatic_profile_resetter_unittest.cc b/chrome/browser/profile_resetter/automatic_profile_resetter_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ad6ed0381471744ab052faa4726ff8ae71ac849f
--- /dev/null
+++ b/chrome/browser/profile_resetter/automatic_profile_resetter_unittest.cc
@@ -0,0 +1,1380 @@
+// Copyright 2013 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/profile_resetter/automatic_profile_resetter.h"
+
+#include <string>
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/metrics/field_trial.h"
+#include "base/prefs/pref_registry_simple.h"
+#include "base/prefs/testing_pref_service.h"
+#include "base/run_loop.h"
+#include "base/test/test_simple_task_runner.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "base/values.h"
+#include "chrome/browser/profile_resetter/automatic_profile_resetter_delegate.h"
+#include "chrome/browser/profile_resetter/automatic_profile_resetter_factory.h"
+#include "chrome/browser/profile_resetter/automatic_profile_resetter_mementos.h"
+#include "chrome/browser/profile_resetter/jtl_foundation.h"
+#include "chrome/browser/profile_resetter/jtl_instructions.h"
+#include "chrome/test/base/scoped_testing_local_state.h"
+#include "chrome/test/base/testing_browser_process.h"
+#include "chrome/test/base/testing_pref_service_syncable.h"
+#include "chrome/test/base/testing_profile.h"
+#include "components/pref_registry/pref_registry_syncable.h"
+#include "components/variations/variations_associated_data.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::_;
+
+namespace {
+
+const char kAutomaticProfileResetStudyName[] = "AutomaticProfileReset";
+const char kStudyDisabledGroupName[] = "Disabled";
+const char kStudyDryRunGroupName[] = "DryRun";
+const char kStudyEnabledGroupName[] = "Enabled";
+
+const char kTestHashSeed[] = "testing-hash-seed";
+const char kTestMementoValue[] = "01234567890123456789012345678901";
+const char kTestInvalidMementoValue[] = "12345678901234567890123456789012";
+
+const char kTestPreferencePath[] = "testing.preference";
+const char kTestPreferenceValue[] = "testing-preference-value";
+
+const char kSearchURLAttributeKey[] = "search_url";
+const char kTestSearchURL[] = "http://example.com/search?q={searchTerms}";
+const char kTestSearchURL2[] = "http://google.com/?q={searchTerms}";
+
+const char kTestModuleDigest[] = "01234567890123456789012345678901";
+const char kTestModuleDigest2[] = "12345678901234567890123456789012";
+
+// Helpers ------------------------------------------------------------------
+
+// A testing version of the AutomaticProfileResetter that differs from the real
+// one only in that it has its statistics reporting mocked out for verification.
+class AutomaticProfileResetterUnderTest : public AutomaticProfileResetter {
+ public:
+  explicit AutomaticProfileResetterUnderTest(Profile* profile)
+      : AutomaticProfileResetter(profile) {}
+  virtual ~AutomaticProfileResetterUnderTest() {}
+
+  MOCK_METHOD2(ReportStatistics, void(uint32, uint32));
+  MOCK_METHOD1(ReportPromptResult,
+      void(AutomaticProfileResetter::PromptResult));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AutomaticProfileResetterUnderTest);
+};
+
+class MockProfileResetterDelegate : public AutomaticProfileResetterDelegate {
+ public:
+  MockProfileResetterDelegate()
+      : emulated_is_default_search_provider_managed_(false) {}
+  virtual ~MockProfileResetterDelegate() {}
+
+  MOCK_METHOD0(EnumerateLoadedModulesIfNeeded, void());
+  MOCK_CONST_METHOD1(RequestCallbackWhenLoadedModulesAreEnumerated,
+                     void(const base::Closure&));
+
+  MOCK_METHOD0(LoadTemplateURLServiceIfNeeded, void());
+  MOCK_CONST_METHOD1(RequestCallbackWhenTemplateURLServiceIsLoaded,
+                     void(const base::Closure&));
+
+  MOCK_METHOD0(FetchBrandcodedDefaultSettingsIfNeeded, void());
+  MOCK_CONST_METHOD1(RequestCallbackWhenBrandcodedDefaultsAreFetched,
+                     void(const base::Closure&));
+
+  MOCK_CONST_METHOD0(OnGetLoadedModuleNameDigestsCalled, void());
+  MOCK_CONST_METHOD0(OnGetDefaultSearchProviderDetailsCalled, void());
+  MOCK_CONST_METHOD0(OnIsDefaultSearchProviderManagedCalled, void());
+  MOCK_CONST_METHOD0(OnGetPrepopulatedSearchProvidersDetailsCalled, void());
+
+  MOCK_METHOD0(TriggerPrompt, bool());
+  MOCK_METHOD2(TriggerProfileSettingsReset, void(bool, const base::Closure&));
+  MOCK_METHOD0(DismissPrompt, void());
+
+  virtual scoped_ptr<base::ListValue>
+      GetLoadedModuleNameDigests() const OVERRIDE {
+    OnGetLoadedModuleNameDigestsCalled();
+    return scoped_ptr<base::ListValue>(
+        emulated_loaded_module_digests_.DeepCopy());
+  }
+
+  virtual scoped_ptr<base::DictionaryValue>
+      GetDefaultSearchProviderDetails() const OVERRIDE {
+    OnGetDefaultSearchProviderDetailsCalled();
+    return scoped_ptr<base::DictionaryValue>(
+        emulated_default_search_provider_details_.DeepCopy());
+  }
+
+  virtual bool IsDefaultSearchProviderManaged() const OVERRIDE {
+    OnIsDefaultSearchProviderManagedCalled();
+    return emulated_is_default_search_provider_managed_;
+  }
+
+  virtual scoped_ptr<base::ListValue>
+      GetPrepopulatedSearchProvidersDetails() const OVERRIDE {
+    OnGetPrepopulatedSearchProvidersDetailsCalled();
+    return scoped_ptr<base::ListValue>(
+        emulated_search_providers_details_.DeepCopy());
+  }
+
+  static void ClosureInvoker(const base::Closure& closure) { closure.Run(); }
+
+  void ExpectCallsToDependenciesSetUpMethods() {
+    EXPECT_CALL(*this, EnumerateLoadedModulesIfNeeded());
+    EXPECT_CALL(*this, LoadTemplateURLServiceIfNeeded());
+    EXPECT_CALL(*this, RequestCallbackWhenLoadedModulesAreEnumerated(_))
+        .WillOnce(testing::Invoke(ClosureInvoker));
+    EXPECT_CALL(*this, RequestCallbackWhenTemplateURLServiceIsLoaded(_))
+        .WillOnce(testing::Invoke(ClosureInvoker));
+  }
+
+  void ExpectCallsToGetterMethods() {
+    EXPECT_CALL(*this, OnGetLoadedModuleNameDigestsCalled());
+    EXPECT_CALL(*this, OnGetDefaultSearchProviderDetailsCalled());
+    EXPECT_CALL(*this, OnIsDefaultSearchProviderManagedCalled());
+    EXPECT_CALL(*this, OnGetPrepopulatedSearchProvidersDetailsCalled());
+  }
+
+  void ExpectCallToShowPrompt() {
+    EXPECT_CALL(*this, TriggerPrompt()).WillOnce(testing::Return(true));
+    EXPECT_CALL(*this, FetchBrandcodedDefaultSettingsIfNeeded());
+  }
+
+  void ExpectCallToTriggerReset(bool send_feedback) {
+    EXPECT_CALL(*this, TriggerProfileSettingsReset(send_feedback, _))
+        .WillOnce(testing::SaveArg<1>(&reset_completion_));
+  }
+
+  base::DictionaryValue& emulated_default_search_provider_details() {
+    return emulated_default_search_provider_details_;
+  }
+
+  base::ListValue& emulated_search_providers_details() {
+    return emulated_search_providers_details_;
+  }
+
+  base::ListValue& emulated_loaded_module_digests() {
+    return emulated_loaded_module_digests_;
+  }
+
+  void set_emulated_is_default_search_provider_managed(bool value) {
+    emulated_is_default_search_provider_managed_ = value;
+  }
+
+  void EmulateProfileResetCompleted() {
+    reset_completion_.Run();
+  }
+
+ private:
+  base::DictionaryValue emulated_default_search_provider_details_;
+  base::ListValue emulated_search_providers_details_;
+  base::ListValue emulated_loaded_module_digests_;
+  bool emulated_is_default_search_provider_managed_;
+  base::Closure reset_completion_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockProfileResetterDelegate);
+};
+
+class FileHostedPromptMementoSynchronous : protected FileHostedPromptMemento {
+ public:
+  explicit FileHostedPromptMementoSynchronous(Profile* profile)
+      : FileHostedPromptMemento(profile) {}
+
+  std::string ReadValue() const {
+    std::string result;
+    FileHostedPromptMemento::ReadValue(base::Bind(&AssignArgumentTo, &result));
+    base::RunLoop().RunUntilIdle();
+    return result;
+  }
+
+  void StoreValue(const std::string& value) {
+    FileHostedPromptMemento::StoreValue(value);
+    base::RunLoop().RunUntilIdle();
+  }
+
+ private:
+  static void AssignArgumentTo(std::string* target, const std::string& value) {
+    *target = value;
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(FileHostedPromptMementoSynchronous);
+};
+
+std::string GetHash(const std::string& input) {
+  return jtl_foundation::Hasher(kTestHashSeed).GetHash(input);
+}
+
+// Encodes a Boolean argument value into JTL bytecode.
+std::string EncodeBool(bool value) { return value ? VALUE_TRUE : VALUE_FALSE; }
+
+// Constructs a simple evaluation program to test that basic input/output works
+// well. It will emulate a scenario in which the reset criteria are satisfied as
+// prescribed by |emulate_satisfied_criterion_{1|2}|, and the reset is triggered
+// when either of them is true. The bits in the combined status mask will be set
+// according to whether or not the memento values received in the input were as
+// expected.
+//
+// More specifically, the output of the program will be as follows:
+// {
+//   "satisfied_criteria_mask_bit1": emulate_satisfied_criterion_1,
+//   "satisfied_criteria_mask_bit2": emulate_satisfied_criterion_2,
+//   "combined_status_mask_bit1":
+//      (emulate_satisfied_criterion_1 || emulate_satisfied_criterion_2),
+//   "combined_status_mask_bit2":
+//      (input["memento_value_in_prefs"] == kTestMementoValue),
+//   "combined_status_mask_bit3":
+//      (input["memento_value_in_local_state"] == kTestMementoValue),
+//   "combined_status_mask_bit4":
+//      (input["memento_value_in_file"] == kTestMementoValue),
+//   "should_prompt":
+//      (emulate_satisfied_criterion_1 || emulate_satisfied_criterion_2),
+//   "had_prompted_already": <OR-combination of above three>,
+//   "memento_value_in_prefs": kTestMementoValue,
+//   "memento_value_in_local_state": kTestMementoValue,
+//   "memento_value_in_file": kTestMementoValue
+// }
+std::string ConstructProgram(bool emulate_satisfied_criterion_1,
+                             bool emulate_satisfied_criterion_2) {
+  std::string bytecode;
+  bytecode += OP_STORE_BOOL(GetHash("satisfied_criteria_mask_bit1"),
+                            EncodeBool(emulate_satisfied_criterion_1));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("satisfied_criteria_mask_bit2"),
+                            EncodeBool(emulate_satisfied_criterion_2));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("should_prompt"),
+                            EncodeBool(emulate_satisfied_criterion_1 ||
+                                       emulate_satisfied_criterion_2));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit1"),
+                            EncodeBool(emulate_satisfied_criterion_1 ||
+                                       emulate_satisfied_criterion_2));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("memento_value_in_prefs"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestMementoValue));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit2"), VALUE_TRUE);
+  bytecode += OP_STORE_BOOL(GetHash("had_prompted_already"), VALUE_TRUE);
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("memento_value_in_local_state"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestMementoValue));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit3"), VALUE_TRUE);
+  bytecode += OP_STORE_BOOL(GetHash("had_prompted_already"), VALUE_TRUE);
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("memento_value_in_file"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestMementoValue));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit4"), VALUE_TRUE);
+  bytecode += OP_STORE_BOOL(GetHash("had_prompted_already"), VALUE_TRUE);
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_HASH(GetHash("memento_value_in_prefs"),
+                            kTestMementoValue);
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_HASH(GetHash("memento_value_in_local_state"),
+                            kTestMementoValue);
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_HASH(GetHash("memento_value_in_file"),
+                            kTestMementoValue);
+  bytecode += OP_END_OF_SENTENCE;
+  return bytecode;
+}
+
+// Constructs another evaluation program to specifically test that bits of the
+// "satisfied_criteria_mask" are correctly assigned, and so is "should_prompt";
+// and that reset is triggered iff the latter is true, regardless of the bits
+// in the mask (so as to allow for a non-disjunctive compound criterion).
+//
+// More specifically, the output of the program will be as follows:
+// {
+//   "satisfied_criteria_mask_bitN": emulate_satisfied_odd_criteria,
+//   "satisfied_criteria_mask_bitM": emulate_satisfied_even_criteria,
+//   "combined_status_mask_bit1": emulate_should_prompt,
+//   "should_prompt": emulate_should_prompt,
+//   "memento_value_in_prefs": kTestMementoValue,
+//   "memento_value_in_local_state": kTestMementoValue,
+//   "memento_value_in_file": kTestMementoValue
+// }
+// ... such that N is {1,3,5} and M is {2,4}.
+std::string ConstructProgramToExerciseCriteria(
+    bool emulate_should_prompt,
+    bool emulate_satisfied_odd_criteria,
+    bool emulate_satisfied_even_criteria) {
+  std::string bytecode;
+  bytecode += OP_STORE_BOOL(GetHash("satisfied_criteria_mask_bit1"),
+                            EncodeBool(emulate_satisfied_odd_criteria));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("satisfied_criteria_mask_bit3"),
+                            EncodeBool(emulate_satisfied_odd_criteria));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("satisfied_criteria_mask_bit5"),
+                            EncodeBool(emulate_satisfied_odd_criteria));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("satisfied_criteria_mask_bit2"),
+                            EncodeBool(emulate_satisfied_even_criteria));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("satisfied_criteria_mask_bit4"),
+                            EncodeBool(emulate_satisfied_even_criteria));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("should_prompt"),
+                            EncodeBool(emulate_should_prompt));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit1"),
+                            EncodeBool(emulate_should_prompt));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_HASH(GetHash("memento_value_in_prefs"),
+                            kTestMementoValue);
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_HASH(GetHash("memento_value_in_local_state"),
+                            kTestMementoValue);
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_STORE_HASH(GetHash("memento_value_in_file"),
+                            kTestMementoValue);
+  bytecode += OP_END_OF_SENTENCE;
+  return bytecode;
+}
+
+// Constructs another evaluation program to specifically test that local state
+// and user preference values are included in the input as expected. We will
+// re-purpose the output bitmasks to channel out information about the outcome
+// of the checks.
+//
+// More specifically, the output of the program will be as follows:
+// {
+//   "combined_status_mask_bit1":
+//       (input["preferences.testing.preference"] == kTestPreferenceValue)
+//   "combined_status_mask_bit2":
+//       (input["local_state.testing.preference"] == kTestPreferenceValue)
+//   "combined_status_mask_bit3": input["preferences_iuc.testing.preference"]
+//   "combined_status_mask_bit4": input["local_state_iuc.testing.preference"]
+// }
+std::string ConstructProgramToCheckPreferences() {
+  std::string bytecode;
+  bytecode += OP_NAVIGATE(GetHash("preferences"));
+  bytecode += OP_NAVIGATE(GetHash("testing"));
+  bytecode += OP_NAVIGATE(GetHash("preference"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestPreferenceValue));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit1"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("local_state"));
+  bytecode += OP_NAVIGATE(GetHash("testing"));
+  bytecode += OP_NAVIGATE(GetHash("preference"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestPreferenceValue));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit2"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("preferences_iuc"));
+  bytecode += OP_NAVIGATE(GetHash("testing"));
+  bytecode += OP_NAVIGATE(GetHash("preference"));
+  bytecode += OP_COMPARE_NODE_BOOL(EncodeBool(true));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit3"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("local_state_iuc"));
+  bytecode += OP_NAVIGATE(GetHash("testing"));
+  bytecode += OP_NAVIGATE(GetHash("preference"));
+  bytecode += OP_COMPARE_NODE_BOOL(EncodeBool(true));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit4"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  return bytecode;
+}
+
+// Legend for the bitmask returned by the above program.
+enum CombinedStatusMaskLegendForCheckingPreferences {
+  HAS_EXPECTED_USER_PREFERENCE = 1 << 0,
+  HAS_EXPECTED_LOCAL_STATE_PREFERENCE = 1 << 1,
+  USER_PREFERENCE_IS_USER_CONTROLLED = 1 << 2,
+  LOCAL_STATE_IS_USER_CONTROLLED = 1 << 3,
+};
+
+// Constructs yet another evaluation program to specifically test that default
+// and pre-populated search engines are included in the input as expected. We
+// will re-purpose the output bitmasks to channel out information about the
+// outcome of the checks.
+//
+// More specifically, the output of the program will be as follows:
+// {
+//   "combined_status_mask_bit1":
+//       (input["default_search_provider.search_url"] == kTestSearchURL)
+//   "combined_status_mask_bit2": input["default_search_provider_iuc"]
+//   "combined_status_mask_bit3":
+//       (input["search_providers.*.search_url"] == kTestSearchURL)
+//   "combined_status_mask_bit4":
+//       (input["search_providers.*.search_url"] == kTestSearchURL2)
+// }
+std::string ConstructProgramToCheckSearchEngines() {
+  std::string bytecode;
+  bytecode += OP_NAVIGATE(GetHash("default_search_provider"));
+  bytecode += OP_NAVIGATE(GetHash("search_url"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestSearchURL));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit1"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("default_search_provider_iuc"));
+  bytecode += OP_COMPARE_NODE_BOOL(EncodeBool(true));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit2"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("search_providers"));
+  bytecode += OP_NAVIGATE_ANY;
+  bytecode += OP_NAVIGATE(GetHash("search_url"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestSearchURL));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit3"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("search_providers"));
+  bytecode += OP_NAVIGATE_ANY;
+  bytecode += OP_NAVIGATE(GetHash("search_url"));
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestSearchURL2));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit4"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  return bytecode;
+}
+
+// Legend for the bitmask returned by the above program.
+enum CombinedStatusMaskLegendForCheckingSearchEngines {
+  HAS_EXPECTED_DEFAULT_SEARCH_PROVIDER = 1 << 0,
+  DEFAULT_SEARCH_PROVIDER_IS_USER_CONTROLLED = 1 << 1,
+  HAS_EXPECTED_PREPOPULATED_SEARCH_PROVIDER_1 = 1 << 2,
+  HAS_EXPECTED_PREPOPULATED_SEARCH_PROVIDER_2 = 1 << 3,
+};
+
+// Constructs yet another evaluation program to specifically test that loaded
+// module digests are included in the input as expected. We will re-purpose the
+// output bitmasks to channel out information about the outcome of the checks.
+//
+// More specifically, the output of the program will be as follows:
+// {
+//   "combined_status_mask_bit1":
+//       (input["loaded_modules.*"] == kTestModuleDigest)
+//   "combined_status_mask_bit2":
+//       (input["loaded_modules.*"] == kTestModuleDigest2)
+// }
+std::string ConstructProgramToCheckLoadedModuleDigests() {
+  std::string bytecode;
+  bytecode += OP_NAVIGATE(GetHash("loaded_modules"));
+  bytecode += OP_NAVIGATE_ANY;
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestModuleDigest));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit1"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  bytecode += OP_NAVIGATE(GetHash("loaded_modules"));
+  bytecode += OP_NAVIGATE_ANY;
+  bytecode += OP_COMPARE_NODE_HASH(GetHash(kTestModuleDigest2));
+  bytecode += OP_STORE_BOOL(GetHash("combined_status_mask_bit2"),
+                            EncodeBool(true));
+  bytecode += OP_END_OF_SENTENCE;
+  return bytecode;
+}
+
+// Legend for the bitmask returned by the above program.
+enum CombinedStatusMaskLegendForCheckingLoadedModules {
+  HAS_EXPECTED_MODULE_DIGEST_1 = 1 << 0,
+  HAS_EXPECTED_MODULE_DIGEST_2 = 1 << 1,
+};
+
+// Test fixtures -------------------------------------------------------------
+
+class AutomaticProfileResetterTestBase : public testing::Test {
+ protected:
+  explicit AutomaticProfileResetterTestBase(
+      const std::string& experiment_group_name)
+      : waiting_task_runner_(new base::TestSimpleTaskRunner),
+        local_state_(TestingBrowserProcess::GetGlobal()),
+        profile_(new TestingProfile()),
+        field_trials_(new base::FieldTrialList(NULL)),
+        memento_in_prefs_(new PreferenceHostedPromptMemento(profile())),
+        memento_in_local_state_(new LocalStateHostedPromptMemento(profile())),
+        memento_in_file_(new FileHostedPromptMementoSynchronous(profile())),
+        experiment_group_name_(experiment_group_name),
+        inject_data_through_variation_params_(false),
+        mock_delegate_(NULL) {
+    // Make sure the factory is not optimized away, so whatever preferences it
+    // wants to register will actually get registered.
+    AutomaticProfileResetterFactory::GetInstance();
+
+    // Register some additional local state preferences for testing purposes.
+    PrefRegistrySimple* local_state_registry = local_state_.Get()->registry();
+    DCHECK(local_state_registry);
+    local_state_registry->RegisterStringPref(kTestPreferencePath, "");
+
+    // Register some additional user preferences for testing purposes.
+    user_prefs::PrefRegistrySyncable* user_prefs_registry =
+        profile_->GetTestingPrefService()->registry();
+    DCHECK(user_prefs_registry);
+    user_prefs_registry->RegisterStringPref(
+        kTestPreferencePath, std::string(),
+        user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  }
+
+  virtual void SetUp() OVERRIDE {
+    variations::testing::ClearAllVariationParams();
+    base::FieldTrialList::CreateFieldTrial(kAutomaticProfileResetStudyName,
+                                           experiment_group_name_);
+    resetter_.reset(
+        new testing::StrictMock<AutomaticProfileResetterUnderTest>(profile()));
+    mock_delegate_owned_.reset(
+        new testing::StrictMock<MockProfileResetterDelegate>());
+    mock_delegate_ = mock_delegate_owned_.get();
+
+    ExpectAllMementoValuesEqualTo(std::string());
+  }
+
+  void SetTestingHashSeed(const std::string& hash_seed) {
+    testing_hash_seed_ = hash_seed;
+  }
+
+  void SetTestingProgram(const std::string& source_code) {
+    testing_program_ = source_code;
+  }
+
+  void AllowInjectingTestDataThroughVariationParams(bool value) {
+    inject_data_through_variation_params_ = value;
+  }
+
+  void ExpectAllMementoValuesEqualTo(const std::string& value) {
+    EXPECT_EQ(value, memento_in_prefs_->ReadValue());
+    EXPECT_EQ(value, memento_in_local_state_->ReadValue());
+    EXPECT_EQ(value, memento_in_file_->ReadValue());
+  }
+
+  void UnleashResetterAndWait() {
+    if (inject_data_through_variation_params_) {
+      std::map<std::string, std::string> variation_params;
+      variation_params["program"] = testing_program_;
+      variation_params["hash_seed"] = testing_hash_seed_;
+      ASSERT_TRUE(variations::AssociateVariationParams(
+          kAutomaticProfileResetStudyName,
+          experiment_group_name_,
+          variation_params));
+    }
+    resetter_->Initialize();
+    resetter_->SetDelegateForTesting(
+        mock_delegate_owned_.PassAs<AutomaticProfileResetterDelegate>());
+    resetter_->SetTaskRunnerForWaitingForTesting(waiting_task_runner_);
+    if (!inject_data_through_variation_params_) {
+      resetter_->SetProgramForTesting(testing_program_);
+      resetter_->SetHashSeedForTesting(testing_hash_seed_);
+    }
+    resetter_->Activate();
+
+    if (waiting_task_runner_->HasPendingTask()) {
+      ASSERT_EQ(base::TimeDelta::FromSeconds(55),
+                waiting_task_runner_->NextPendingTaskDelay());
+      waiting_task_runner_->RunPendingTasks();
+    }
+    base::RunLoop().RunUntilIdle();
+    content::BrowserThread::GetBlockingPool()->FlushForTesting();
+    base::RunLoop().RunUntilIdle();
+  }
+
+  // Goes through an evaluation flow such that the reset criteria are satisfied.
+  // Used to reduce boilerplate for tests that need to verify behavior during
+  // the reset prompt flow.
+  void OrchestrateThroughEvaluationFlow() {
+    SetTestingProgram(ConstructProgram(true, true));
+    SetTestingHashSeed(kTestHashSeed);
+
+    mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+    mock_delegate().ExpectCallsToGetterMethods();
+    mock_delegate().ExpectCallToShowPrompt();
+    EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x01u));
+
+    UnleashResetterAndWait();
+
+    EXPECT_TRUE(resetter().ShouldShowResetBanner());
+    testing::Mock::VerifyAndClearExpectations(&resetter());
+    testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+  }
+
+  // Explicitly shut down the service to double-check that nothing explodes, but
+  // first, verify expectations to make sure the service makes no more calls to
+  // any mocked functions during or after shutdown.
+  void VerifyExpectationsThenShutdownResetter() {
+    testing::Mock::VerifyAndClearExpectations(&resetter());
+    testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+
+    resetter_->Shutdown();
+    resetter_.reset();
+  }
+
+  TestingProfile* profile() { return profile_.get(); }
+  TestingPrefServiceSimple* local_state() { return local_state_.Get(); }
+
+  PreferenceHostedPromptMemento& memento_in_prefs() {
+    return *memento_in_prefs_;
+  }
+
+  LocalStateHostedPromptMemento& memento_in_local_state() {
+    return *memento_in_local_state_;
+  }
+
+  FileHostedPromptMementoSynchronous& memento_in_file() {
+    return *memento_in_file_;
+  }
+
+  MockProfileResetterDelegate& mock_delegate() { return *mock_delegate_; }
+  AutomaticProfileResetterUnderTest& resetter() { return *resetter_; }
+
+ private:
+  content::TestBrowserThreadBundle thread_bundle_;
+  scoped_refptr<base::TestSimpleTaskRunner> waiting_task_runner_;
+  ScopedTestingLocalState local_state_;
+  scoped_ptr<TestingProfile> profile_;
+  scoped_ptr<base::FieldTrialList> field_trials_;
+  scoped_ptr<PreferenceHostedPromptMemento> memento_in_prefs_;
+  scoped_ptr<LocalStateHostedPromptMemento> memento_in_local_state_;
+  scoped_ptr<FileHostedPromptMementoSynchronous> memento_in_file_;
+
+  std::string experiment_group_name_;
+  std::string testing_program_;
+  std::string testing_hash_seed_;
+  bool inject_data_through_variation_params_;
+
+  scoped_ptr<AutomaticProfileResetterUnderTest> resetter_;
+  scoped_ptr<MockProfileResetterDelegate> mock_delegate_owned_;
+  MockProfileResetterDelegate* mock_delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(AutomaticProfileResetterTestBase);
+};
+
+class AutomaticProfileResetterTest : public AutomaticProfileResetterTestBase {
+ protected:
+  AutomaticProfileResetterTest()
+      : AutomaticProfileResetterTestBase(kStudyEnabledGroupName) {}
+};
+
+class AutomaticProfileResetterTestDryRun
+    : public AutomaticProfileResetterTestBase {
+ protected:
+  AutomaticProfileResetterTestDryRun()
+      : AutomaticProfileResetterTestBase(kStudyDryRunGroupName) {}
+};
+
+class AutomaticProfileResetterTestDisabled
+    : public AutomaticProfileResetterTestBase {
+ protected:
+  AutomaticProfileResetterTestDisabled()
+      : AutomaticProfileResetterTestBase(kStudyDisabledGroupName) {}
+};
+
+// Tests ---------------------------------------------------------------------
+
+TEST_F(AutomaticProfileResetterTestDisabled, NothingIsDoneWhenDisabled) {
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  // No calls are expected to the delegate.
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  ExpectAllMementoValuesEqualTo(std::string());
+}
+
+TEST_F(AutomaticProfileResetterTestDryRun, CriteriaNotSatisfied) {
+  SetTestingProgram(ConstructProgramToExerciseCriteria(false, true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x1fu, 0x00u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  ExpectAllMementoValuesEqualTo(std::string());
+}
+
+TEST_F(AutomaticProfileResetterTestDryRun, OddCriteriaSatisfied) {
+  SetTestingProgram(ConstructProgramToExerciseCriteria(true, true, false));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x15u, 0x01u));
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_NOT_TRIGGERED));
+
+  UnleashResetterAndWait();
+
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTestDryRun, EvenCriteriaSatisfied) {
+  SetTestingProgram(ConstructProgramToExerciseCriteria(true, false, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x0au, 0x01u));
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_NOT_TRIGGERED));
+
+  UnleashResetterAndWait();
+
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+#if defined(GOOGLE_CHROME_BUILD)
+TEST_F(AutomaticProfileResetterTestDryRun, ProgramSetThroughVariationParams) {
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+  AllowInjectingTestDataThroughVariationParams(true);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x01u));
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_NOT_TRIGGERED));
+
+  UnleashResetterAndWait();
+
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+#endif
+
+TEST_F(AutomaticProfileResetterTestDryRun,
+       ConditionsSatisfiedAndInvalidMementos) {
+  memento_in_prefs().StoreValue(kTestInvalidMementoValue);
+  memento_in_local_state().StoreValue(kTestInvalidMementoValue);
+  memento_in_file().StoreValue(kTestInvalidMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x01u));
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_NOT_TRIGGERED));
+
+  UnleashResetterAndWait();
+
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTestDryRun, AlreadyHadPrefHostedMemento) {
+  memento_in_prefs().StoreValue(kTestMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x03u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  EXPECT_EQ(kTestMementoValue, memento_in_prefs().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_local_state().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_file().ReadValue());
+}
+
+TEST_F(AutomaticProfileResetterTestDryRun, AlreadyHadLocalStateHostedMemento) {
+  memento_in_local_state().StoreValue(kTestMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x05u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  EXPECT_EQ(std::string(), memento_in_prefs().ReadValue());
+  EXPECT_EQ(kTestMementoValue, memento_in_local_state().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_file().ReadValue());
+}
+
+TEST_F(AutomaticProfileResetterTestDryRun, AlreadyHadFileHostedMemento) {
+  memento_in_file().StoreValue(kTestMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x09u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  EXPECT_EQ(std::string(), memento_in_prefs().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_local_state().ReadValue());
+  EXPECT_EQ(kTestMementoValue, memento_in_file().ReadValue());
+}
+
+TEST_F(AutomaticProfileResetterTestDryRun, DoNothingWhenResourcesAreMissing) {
+  SetTestingProgram(std::string());
+  SetTestingHashSeed(std::string());
+
+  // No calls are expected to the delegate.
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  ExpectAllMementoValuesEqualTo(std::string());
+}
+
+TEST_F(AutomaticProfileResetterTest, CriteriaNotSatisfied) {
+  SetTestingProgram(ConstructProgramToExerciseCriteria(false, true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x1fu, 0x00u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  ExpectAllMementoValuesEqualTo(std::string());
+}
+
+TEST_F(AutomaticProfileResetterTest, OddCriteriaSatisfied) {
+  SetTestingProgram(ConstructProgramToExerciseCriteria(true, true, false));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  mock_delegate().ExpectCallToShowPrompt();
+  EXPECT_CALL(resetter(), ReportStatistics(0x15u, 0x01u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, EvenCriteriaSatisfied) {
+  SetTestingProgram(ConstructProgramToExerciseCriteria(true, false, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  mock_delegate().ExpectCallToShowPrompt();
+  EXPECT_CALL(resetter(), ReportStatistics(0x0au, 0x01u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+#if defined(GOOGLE_CHROME_BUILD)
+TEST_F(AutomaticProfileResetterTest, ProgramSetThroughVariationParams) {
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+  AllowInjectingTestDataThroughVariationParams(true);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  mock_delegate().ExpectCallToShowPrompt();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x01u));
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+
+  UnleashResetterAndWait();
+  resetter().NotifyDidShowResetBubble();
+
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+#endif
+
+TEST_F(AutomaticProfileResetterTest, ConditionsSatisfiedAndInvalidMementos) {
+  memento_in_prefs().StoreValue(kTestInvalidMementoValue);
+  memento_in_local_state().StoreValue(kTestInvalidMementoValue);
+  memento_in_file().StoreValue(kTestInvalidMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  mock_delegate().ExpectCallToShowPrompt();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x01u));
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+
+  UnleashResetterAndWait();
+  resetter().NotifyDidShowResetBubble();
+
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PrefHostedMementoPreventsPrompt) {
+  memento_in_prefs().StoreValue(kTestMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x03u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  EXPECT_EQ(kTestMementoValue, memento_in_prefs().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_local_state().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_file().ReadValue());
+}
+
+TEST_F(AutomaticProfileResetterTest, LocalStateHostedMementoPreventsPrompt) {
+  memento_in_local_state().StoreValue(kTestMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x05u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  EXPECT_EQ(std::string(), memento_in_prefs().ReadValue());
+  EXPECT_EQ(kTestMementoValue, memento_in_local_state().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_file().ReadValue());
+}
+
+TEST_F(AutomaticProfileResetterTest, FileHostedMementoPreventsPrompt) {
+  memento_in_file().StoreValue(kTestMementoValue);
+
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x09u));
+
+  UnleashResetterAndWait();
+
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  EXPECT_EQ(std::string(), memento_in_prefs().ReadValue());
+  EXPECT_EQ(std::string(), memento_in_local_state().ReadValue());
+  EXPECT_EQ(kTestMementoValue, memento_in_file().ReadValue());
+}
+
+TEST_F(AutomaticProfileResetterTest, DoNothingWhenResourcesAreMissing) {
+  SetTestingProgram(std::string());
+  SetTestingHashSeed(std::string());
+
+  // No calls are expected to the delegate.
+
+  UnleashResetterAndWait();
+
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  ExpectAllMementoValuesEqualTo(std::string());
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptSuppressed) {
+  OrchestrateThroughEvaluationFlow();
+
+  VerifyExpectationsThenShutdownResetter();
+
+  ExpectAllMementoValuesEqualTo(std::string());
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptNotSupported) {
+  SetTestingProgram(ConstructProgram(true, true));
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  EXPECT_CALL(mock_delegate(), TriggerPrompt())
+      .WillOnce(testing::Return(false));
+  EXPECT_CALL(resetter(), ReportStatistics(0x03u, 0x01u));
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_NOT_TRIGGERED));
+
+  UnleashResetterAndWait();
+
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptIgnored) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptActionReset) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+
+  mock_delegate().ExpectCallToTriggerReset(false);
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_ACTION_RESET));
+  resetter().TriggerProfileReset(false /*send_feedback*/);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+  testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  mock_delegate().EmulateProfileResetCompleted();
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptActionResetWithFeedback) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+
+  mock_delegate().ExpectCallToTriggerReset(true);
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_ACTION_RESET));
+  resetter().TriggerProfileReset(true /*send_feedback*/);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+  testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  mock_delegate().EmulateProfileResetCompleted();
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptActionNoReset) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_ACTION_NO_RESET));
+  resetter().SkipProfileReset();
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptFollowedByWebUIReset) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  resetter().NotifyDidOpenWebUIResetDialog();
+  testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_FOLLOWED_BY_WEBUI_RESET));
+  resetter().NotifyDidCloseWebUIResetDialog(true);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptFollowedByWebUINoReset) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  resetter().NotifyDidOpenWebUIResetDialog();
+  testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_FOLLOWED_BY_WEBUI_NO_RESET));
+  resetter().NotifyDidCloseWebUIResetDialog(false);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptFollowedByIncidentalWebUIReset) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+
+  // Missing NotifyDidOpenWebUIResetDialog().
+  // This can arise if a settings page was already opened at the time the prompt
+  // was triggered, and this already opened dialog was used to initiate a reset
+  // after having dismissed the prompt.
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_FOLLOWED_BY_WEBUI_RESET));
+  resetter().NotifyDidCloseWebUIResetDialog(true);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptSuppressedButHadWebUIReset) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  resetter().NotifyDidOpenWebUIResetDialog();
+  testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_NOT_SHOWN_BUBBLE_BUT_HAD_WEBUI_RESET));
+  resetter().NotifyDidCloseWebUIResetDialog(true);
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, PromptSuppressedButHadWebUINoReset) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(mock_delegate(), DismissPrompt());
+  resetter().NotifyDidOpenWebUIResetDialog();
+  testing::Mock::VerifyAndClearExpectations(&mock_delegate());
+
+  EXPECT_CALL(resetter(), ReportPromptResult(AutomaticProfileResetter::
+      PROMPT_NOT_SHOWN_BUBBLE_BUT_HAD_WEBUI_NO_RESET));
+  resetter().NotifyDidCloseWebUIResetDialog(false);
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  EXPECT_TRUE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, BannerDismissed) {
+  OrchestrateThroughEvaluationFlow();
+
+  EXPECT_CALL(resetter(), ReportPromptResult(
+      AutomaticProfileResetter::PROMPT_SHOWN_BUBBLE));
+  resetter().NotifyDidShowResetBubble();
+  ExpectAllMementoValuesEqualTo(kTestMementoValue);
+  testing::Mock::VerifyAndClearExpectations(&resetter());
+
+  resetter().NotifyDidCloseWebUIResetBanner();
+
+  EXPECT_TRUE(resetter().IsResetPromptFlowActive());
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+
+  // Note: we use strict mocks, so this also checks the bubble is not closed.
+  VerifyExpectationsThenShutdownResetter();
+}
+
+TEST_F(AutomaticProfileResetterTest, BannerDismissedWhilePromptSuppressed) {
+  OrchestrateThroughEvaluationFlow();
+
+  resetter().NotifyDidCloseWebUIResetBanner();
+
+  EXPECT_TRUE(resetter().IsResetPromptFlowActive());
+  EXPECT_FALSE(resetter().ShouldShowResetBanner());
+  VerifyExpectationsThenShutdownResetter();
+
+  ExpectAllMementoValuesEqualTo(std::string());
+}
+
+// Please see comments above ConstructProgramToCheckPreferences() to understand
+// how the following tests work.
+
+TEST_F(AutomaticProfileResetterTest, InputUserPreferencesCorrect) {
+  SetTestingProgram(ConstructProgramToCheckPreferences());
+  SetTestingHashSeed(kTestHashSeed);
+
+  PrefService* prefs = profile()->GetPrefs();
+  prefs->SetString(kTestPreferencePath, kTestPreferenceValue);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask = HAS_EXPECTED_USER_PREFERENCE |
+                         USER_PREFERENCE_IS_USER_CONTROLLED;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+TEST_F(AutomaticProfileResetterTest, InputLocalStateCorrect) {
+  SetTestingProgram(ConstructProgramToCheckPreferences());
+  SetTestingHashSeed(kTestHashSeed);
+
+  PrefService* prefs = local_state();
+  prefs->SetString(kTestPreferencePath, kTestPreferenceValue);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask = HAS_EXPECTED_LOCAL_STATE_PREFERENCE |
+                         LOCAL_STATE_IS_USER_CONTROLLED;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+TEST_F(AutomaticProfileResetterTest, InputManagedUserPreferencesCorrect) {
+  SetTestingProgram(ConstructProgramToCheckPreferences());
+  SetTestingHashSeed(kTestHashSeed);
+
+  TestingPrefServiceSyncable* prefs = profile()->GetTestingPrefService();
+  prefs->SetManagedPref(kTestPreferencePath,
+                        new base::StringValue(kTestPreferenceValue));
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask = HAS_EXPECTED_USER_PREFERENCE;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+TEST_F(AutomaticProfileResetterTest, InputManagedLocalStateCorrect) {
+  SetTestingProgram(ConstructProgramToCheckPreferences());
+  SetTestingHashSeed(kTestHashSeed);
+
+  TestingPrefServiceSimple* prefs = local_state();
+  prefs->SetManagedPref(kTestPreferencePath,
+                        new base::StringValue(kTestPreferenceValue));
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask = HAS_EXPECTED_LOCAL_STATE_PREFERENCE;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+// Please see comments above ConstructProgramToCheckSearchEngines() to
+// understand how the following tests work.
+
+TEST_F(AutomaticProfileResetterTest, InputDefaultSearchProviderCorrect) {
+  SetTestingProgram(ConstructProgramToCheckSearchEngines());
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().emulated_default_search_provider_details().SetString(
+      kSearchURLAttributeKey, kTestSearchURL);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask = HAS_EXPECTED_DEFAULT_SEARCH_PROVIDER |
+                         DEFAULT_SEARCH_PROVIDER_IS_USER_CONTROLLED;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+TEST_F(AutomaticProfileResetterTest, InputSearchProviderManagedCorrect) {
+  SetTestingProgram(ConstructProgramToCheckSearchEngines());
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().emulated_default_search_provider_details().SetString(
+      kSearchURLAttributeKey, kTestSearchURL);
+  mock_delegate().set_emulated_is_default_search_provider_managed(true);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask = HAS_EXPECTED_DEFAULT_SEARCH_PROVIDER;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+TEST_F(AutomaticProfileResetterTest, InputSearchProvidersCorrect) {
+  SetTestingProgram(ConstructProgramToCheckSearchEngines());
+  SetTestingHashSeed(kTestHashSeed);
+
+  base::DictionaryValue* search_provider_1 = new base::DictionaryValue;
+  base::DictionaryValue* search_provider_2 = new base::DictionaryValue;
+  search_provider_1->SetString(kSearchURLAttributeKey, kTestSearchURL);
+  search_provider_2->SetString(kSearchURLAttributeKey, kTestSearchURL2);
+  mock_delegate().emulated_search_providers_details().Append(search_provider_1);
+  mock_delegate().emulated_search_providers_details().Append(search_provider_2);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask = DEFAULT_SEARCH_PROVIDER_IS_USER_CONTROLLED |
+                         HAS_EXPECTED_PREPOPULATED_SEARCH_PROVIDER_1 |
+                         HAS_EXPECTED_PREPOPULATED_SEARCH_PROVIDER_2;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+// Please see comments above ConstructProgramToCheckLoadedModuleDigests() to
+// understand how the following tests work.
+
+TEST_F(AutomaticProfileResetterTest, InputModuleDigestsCorrect) {
+  SetTestingProgram(ConstructProgramToCheckLoadedModuleDigests());
+  SetTestingHashSeed(kTestHashSeed);
+
+  mock_delegate().emulated_loaded_module_digests().AppendString(
+      kTestModuleDigest);
+  mock_delegate().emulated_loaded_module_digests().AppendString(
+      kTestModuleDigest2);
+
+  mock_delegate().ExpectCallsToDependenciesSetUpMethods();
+  mock_delegate().ExpectCallsToGetterMethods();
+  uint32 expected_mask =
+      HAS_EXPECTED_MODULE_DIGEST_1 | HAS_EXPECTED_MODULE_DIGEST_2;
+  EXPECT_CALL(resetter(), ReportStatistics(0x00u, expected_mask));
+
+  UnleashResetterAndWait();
+}
+
+}  // namespace