Adds HotwordPrivate API for integrating the hotword feature to AppLauncher

chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc

Index: chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
diff --git a/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc b/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
index bd7c08faf29bd61040ca38e405b1740d6df39ef0..6ba941bf4ab6ba1b270b4ebc2eab259305b28b19 100644
--- a/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
+++ b/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
@@ -8,6 +8,7 @@
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/search/hotword_client.h"
 #include "chrome/browser/search/hotword_service.h"
 #include "chrome/browser/search/hotword_service_factory.h"
 #include "chrome/common/pref_names.h"
@@ -38,6 +39,37 @@ class MockHotwordService : public HotwordService {
   DISALLOW_COPY_AND_ASSIGN(MockHotwordService);
 };
 
+class MockHotwordClient : public HotwordClient {
+ public:
+  MockHotwordClient()
+      : last_enabled_(false),
+        state_changed_count_(0),
+        recognized_count_(0) {
+  }
+
+  virtual ~MockHotwordClient() {}
+
+  virtual void OnHotwordStateChanged(bool enabled) OVERRIDE {
+    last_enabled_ = enabled;
+    state_changed_count_++;
+  }
+
+  virtual void OnHotwordRecognized() OVERRIDE {
+    recognized_count_++;
+  }
+
+  bool last_enabled() const { return last_enabled_; }
+  int state_changed_count() const { return state_changed_count_; }
+  int recognized_count() const { return recognized_count_; }
+
+ private:
+  bool last_enabled_;
+  int state_changed_count_;
+  int recognized_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockHotwordClient);
+};
+
 class HotwordPrivateApiTest : public ExtensionApiTest {
  public:
   HotwordPrivateApiTest() {}
@@ -131,3 +163,23 @@ IN_PROC_BROWSER_TEST_F(HotwordPrivateApiTest, OnEnabledChanged) {
   profile()->GetPrefs()->SetBoolean(prefs::kHotwordSearchEnabled, true);
   EXPECT_TRUE(listenerNotification.WaitUntilSatisfied());
 }
+
+IN_PROC_BROWSER_TEST_F(HotwordPrivateApiTest, HotwordSession) {
+  extensions::HotwordPrivateEventService::GetFactoryInstance();
+  ExtensionTestMessageListener listener("ready", false);
+  LoadExtensionAsComponent(
+      test_data_dir_.AppendASCII("hotwordSession"));
+  EXPECT_TRUE(listener.WaitUntilSatisfied());
+
+  ExtensionTestMessageListener listenerStopReady("stopReady", false);
+  ExtensionTestMessageListener listenerStopped("stopped", false);
+  MockHotwordClient client;
+  service()->RequestHotwordSession(&client);
+  EXPECT_TRUE(listenerStopReady.WaitUntilSatisfied());
+  service()->StopHotwordSession(&client);
+  EXPECT_TRUE(listenerStopped.WaitUntilSatisfied());
+
+  EXPECT_TRUE(client.last_enabled());
+  EXPECT_EQ(1, client.state_changed_count());
+  EXPECT_EQ(1, client.recognized_count());
+}