Adds HotwordPrivate API for integrating the hotword feature to AppLauncher

chrome/browser/search/hotword_service.cc

Index: chrome/browser/search/hotword_service.cc
diff --git a/chrome/browser/search/hotword_service.cc b/chrome/browser/search/hotword_service.cc
index ac25512d2f273ca8f27672a3e8413ef7b6059c4a..d2b104870019a1187515dc147f6967e1bd002e27 100644
--- a/chrome/browser/search/hotword_service.cc
+++ b/chrome/browser/search/hotword_service.cc
@@ -10,6 +10,7 @@
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/api/hotword_private/hotword_private_api.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension_constants.h"
@@ -20,6 +21,9 @@
 #include "extensions/common/extension.h"
 #include "ui/base/l10n/l10n_util.h"
 
+using extensions::BrowserContextKeyedAPIFactory;
+using extensions::HotwordPrivateEventService;
+
 namespace {
 const int kMaxTimesToShowOptInPopup = 10;
 
@@ -120,7 +124,8 @@ bool HotwordService::DoesHotwordSupportLanguage(Profile* profile) {
 }
 
 HotwordService::HotwordService(Profile* profile)
-    : profile_(profile) {
+    : profile_(profile),
+      client_(NULL) {
   // This will be called during profile initialization which is a good time
   // to check the user's hotword state.
   HotwordEnabled enabled_state = UNSET;
@@ -273,3 +278,33 @@ void HotwordService::OnHotwordSearchEnabledChanged(
   else
     DisableHotwordExtension(extension_service);
 }
+
+void HotwordService::RequestHotwordSession(
+    HotwordClient* client) {

[rpetterson, 2014/05/02 19:13:16]

move to line above

[Jun Mukai, 2014/05/02 22:18:57]

Done.

+  if (!IsServiceAvailable())
+    return;
+
+  if (client_)

[rpetterson, 2014/05/02 19:13:16]

combine with the line above:
if (!IsServiceAvailable || client_)
  return;

[Jun Mukai, 2014/05/02 22:18:57]

Done.

+    return;
+
+  client_ = client;
+
+  HotwordPrivateEventService* event_service =
+      BrowserContextKeyedAPIFactory<HotwordPrivateEventService>::Get(profile_);
+  if (event_service)
+    event_service->OnHotwordSessionRequested();
+}
+
+void HotwordService::StopHotwordSession(
+    HotwordClient* client) {

[rpetterson, 2014/05/02 19:13:16]

move to line above

[Jun Mukai, 2014/05/02 22:18:57]

Done.

+  if (!IsServiceAvailable())
+    return;
+
+  DCHECK(client_ == client);
+
+  client_ = NULL;
+  HotwordPrivateEventService* event_service =
+      BrowserContextKeyedAPIFactory<HotwordPrivateEventService>::Get(profile_);
+  if (event_service)
+    event_service->OnHotwordSessionStopped();
+}