Deprecate scoped_ptr part 1.

With this CL, scoped_ptr is replaced with std::unique_ptr mainly in the
following directories.
 - src/engine/
 - src/usage_stats/

BUG=#219
TEST=unittest
REF_BUG=9164610
REF_CL=84942345,84942768,84943699

src/engine/engine.h

@@ -30,8 +30,9 @@
 #ifndef MOZC_ENGINE_ENGINE_H_
 #define MOZC_ENGINE_ENGINE_H_
 
+#include <memory>
+
 #include "base/port.h"
-#include "base/scoped_ptr.h"
 #include "dictionary/dictionary_interface.h"
 #include "dictionary/pos_group.h"
 #include "dictionary/user_dictionary.h"
@@ -76,24 +77,24 @@ class Engine : public EngineInterface {
   }
 
  private:
-  scoped_ptr<dictionary::SuppressionDictionary> suppression_dictionary_;
-  scoped_ptr<const Connector> connector_;
-  scoped_ptr<const Segmenter> segmenter_;
-  scoped_ptr<dictionary::UserDictionary> user_dictionary_;
-  scoped_ptr<dictionary::DictionaryInterface> suffix_dictionary_;
-  scoped_ptr<dictionary::DictionaryInterface> dictionary_;
-  scoped_ptr<const dictionary::PosGroup> pos_group_;
-  scoped_ptr<ImmutableConverterInterface> immutable_converter_;
-  scoped_ptr<const SuggestionFilter> suggestion_filter_;
+  std::unique_ptr<dictionary::SuppressionDictionary> suppression_dictionary_;
+  std::unique_ptr<const Connector> connector_;
+  std::unique_ptr<const Segmenter> segmenter_;
+  std::unique_ptr<dictionary::UserDictionary> user_dictionary_;
+  std::unique_ptr<dictionary::DictionaryInterface> suffix_dictionary_;
+  std::unique_ptr<dictionary::DictionaryInterface> dictionary_;
+  std::unique_ptr<const dictionary::PosGroup> pos_group_;
+  std::unique_ptr<ImmutableConverterInterface> immutable_converter_;
+  std::unique_ptr<const SuggestionFilter> suggestion_filter_;
 
   // TODO(noriyukit): Currently predictor and rewriter are created by this class
   // but owned by converter_. Since this class creates these two, it'd be better
   // if Engine class owns these two instances.
   PredictorInterface *predictor_;
   RewriterInterface *rewriter_;
 
-  scoped_ptr<ConverterInterface> converter_;
-  scoped_ptr<UserDataManagerInterface> user_data_manager_;
+  std::unique_ptr<ConverterInterface> converter_;
+  std::unique_ptr<UserDataManagerInterface> user_data_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(Engine);
 };

src/engine/engine_factory_test.cc

@@ -29,14 +29,16 @@
 
 #include "engine/engine_factory.h"
 
+#include <memory>
+
 #include "engine/engine_interface.h"
 #include "prediction/predictor_interface.h"
 #include "testing/base/public/gunit.h"
 
 namespace mozc {
 
 TEST(EngineFactoryTest, MobilePredictorOnAndroid) {
-  scoped_ptr<EngineInterface> engine(EngineFactory::Create());
+  std::unique_ptr<EngineInterface> engine(EngineFactory::Create());
   PredictorInterface *predictor = engine->GetPredictor();
 #ifdef OS_ANDROID
   EXPECT_EQ("MobilePredictor", predictor->GetPredictorName());

src/engine/mock_converter_engine.h

@@ -30,8 +30,9 @@
 #ifndef MOZC_ENGINE_MOCK_CONVERTER_ENGINE_H_
 #define MOZC_ENGINE_MOCK_CONVERTER_ENGINE_H_
 
+#include <memory>
+
 #include "base/port.h"
-#include "base/scoped_ptr.h"
 #include "engine/engine_interface.h"
 
 namespace mozc {
@@ -58,8 +59,8 @@ class MockConverterEngine : public EngineInterface {
   ConverterMock* mutable_converter_mock();
 
  private:
-  scoped_ptr<ConverterMock> converter_mock_;
-  scoped_ptr<UserDataManagerMock> user_data_manager_mock_;
+  std::unique_ptr<ConverterMock> converter_mock_;
+  std::unique_ptr<UserDataManagerMock> user_data_manager_mock_;
 
   DISALLOW_COPY_AND_ASSIGN(MockConverterEngine);
 };

src/mozc_version_template.txt

@@ -1,6 +1,6 @@
 MAJOR=2
 MINOR=17
-BUILD=2146
+BUILD=2147
 REVISION=102
 # NACL_DICTIONARY_VERSION is the target version of the system dictionary to be
 # downloaded by NaCl Mozc.

src/session/session_usage_observer_test.cc

@@ -36,6 +36,7 @@
 #include "base/logging.h"
 #include "base/scheduler.h"
 #include "base/scheduler_stub.h"
+#include "base/scoped_ptr.h"
 #include "base/system_util.h"
 #include "base/util.h"
 #include "config/stats_config_util.h"

src/usage_stats/usage_stats_test.cc

@@ -33,7 +33,6 @@
 #include <string>
 
 #include "base/port.h"
-#include "base/scoped_ptr.h"
 #include "base/system_util.h"
 #include "config/stats_config_util.h"
 #include "config/stats_config_util_mock.h"

src/usage_stats/usage_stats_testing_util.h

@@ -30,8 +30,9 @@
 #ifndef MOZC_USAGE_STATS_USAGE_STATS_TESTING_UTIL_H_
 #define MOZC_USAGE_STATS_USAGE_STATS_TESTING_UTIL_H_
 
+#include <memory>
+
 #include "base/port.h"
-#include "base/scoped_ptr.h"
 #include "testing/base/public/gunit.h"
 
 namespace mozc {
@@ -106,7 +107,7 @@ class scoped_usage_stats_enabler {
   ~scoped_usage_stats_enabler();
 
  private:
-  scoped_ptr<mozc::config::StatsConfigUtilMock> stats_config_util_;
+  std::unique_ptr<mozc::config::StatsConfigUtilMock> stats_config_util_;
   DISALLOW_COPY_AND_ASSIGN(scoped_usage_stats_enabler);
 };
 

src/usage_stats/usage_stats_updater.cc

@@ -30,6 +30,7 @@
 #include "usage_stats/usage_stats_updater.h"
 
 #include <algorithm>
+#include <memory>
 #include <set>
 #include <sstream>
 #include <vector>
@@ -41,7 +42,6 @@
 #include "base/mac_util.h"
 #include "base/number_util.h"
 #include "base/port.h"
-#include "base/scoped_ptr.h"
 #include "base/system_util.h"
 #include "base/util.h"
 #include "base/win_util.h"
@@ -93,7 +93,7 @@ bool IMEActivationKeyCustomized() {
   for (size_t i = 0; i < arraysize(kKeyMaps); ++i) {
     const char *keymap_file =
         keymap::KeyMapManager::GetKeyMapFileName(kKeyMaps[i]);
-    scoped_ptr<istream> ifs(ConfigFileStream::LegacyOpen(keymap_file));
+    std::unique_ptr<istream> ifs(ConfigFileStream::LegacyOpen(keymap_file));
     if (ifs.get() == NULL) {
       LOG(ERROR) << "can not open default keymap table " << i;
       continue;

src/usage_stats/usage_stats_updater_test.cc

@@ -32,7 +32,6 @@
 #include <string>
 
 #include "base/port.h"
-#include "base/scoped_ptr.h"
 #include "base/system_util.h"
 #include "base/util.h"
 #include "config/config_handler.h"