Revert of Host-side implementation of ARC Intent handler

components/arc/arc_bridge_service.h

Index: components/arc/arc_bridge_service.h
diff --git a/components/arc/arc_bridge_service.h b/components/arc/arc_bridge_service.h
index 7c4586d88fca89cde9071e46baf6cccf00397811..94871c72c54a8707408dad1686760f9719400b39 100644
--- a/components/arc/arc_bridge_service.h
+++ b/components/arc/arc_bridge_service.h
@@ -93,10 +93,6 @@
     virtual void OnInputInstanceReady() {}
     virtual void OnInputInstanceClosed() {}
 
-    // Called whenever the ARC intent helper interface state changes.
-    virtual void OnIntentHelperInstanceReady() {}
-    virtual void OnIntentHelperInstanceClosed() {}
-
     // Called whenever the ARC notification interface state changes.
     virtual void OnNotificationsInstanceReady() {}
     virtual void OnNotificationsInstanceClosed() {}
@@ -159,9 +155,6 @@
   ClipboardInstance* clipboard_instance() { return clipboard_ptr_.get(); }
   ImeInstance* ime_instance() { return ime_ptr_.get(); }
   InputInstance* input_instance() { return input_ptr_.get(); }
-  IntentHelperInstance* intent_helper_instance() {
-    return intent_helper_ptr_.get();
-  }
   NotificationsInstance* notifications_instance() {
     return notifications_ptr_.get();
   }
@@ -175,7 +168,6 @@
   int32_t clipboard_version() const { return clipboard_ptr_.version(); }
   int32_t ime_version() const { return ime_ptr_.version(); }
   int32_t input_version() const { return input_ptr_.version(); }
-  int32_t intent_helper_version() const { return intent_helper_ptr_.version(); }
   int32_t notifications_version() const { return notifications_ptr_.version(); }
   int32_t power_version() const { return power_ptr_.version(); }
   int32_t process_version() const { return process_ptr_.version(); }
@@ -188,8 +180,6 @@
   void OnClipboardInstanceReady(ClipboardInstancePtr clipboard_ptr) override;
   void OnImeInstanceReady(ImeInstancePtr ime_ptr) override;
   void OnInputInstanceReady(InputInstancePtr input_ptr) override;
-  void OnIntentHelperInstanceReady(
-      IntentHelperInstancePtr intent_helper_ptr) override;
   void OnNotificationsInstanceReady(
       NotificationsInstancePtr notifications_ptr) override;
   void OnPowerInstanceReady(PowerInstancePtr power_ptr) override;
@@ -232,7 +222,6 @@
   void CloseClipboardChannel();
   void CloseImeChannel();
   void CloseInputChannel();
-  void CloseIntentHelperChannel();
   void CloseNotificationsChannel();
   void ClosePowerChannel();
   void CloseProcessChannel();
@@ -245,7 +234,6 @@
   void OnClipboardVersionReady(int32_t version);
   void OnImeVersionReady(int32_t version);
   void OnInputVersionReady(int32_t version);
-  void OnIntentHelperVersionReady(int32_t version);
   void OnNotificationsVersionReady(int32_t version);
   void OnPowerVersionReady(int32_t version);
   void OnProcessVersionReady(int32_t version);
@@ -258,7 +246,6 @@
   ClipboardInstancePtr clipboard_ptr_;
   ImeInstancePtr ime_ptr_;
   InputInstancePtr input_ptr_;
-  IntentHelperInstancePtr intent_helper_ptr_;
   NotificationsInstancePtr notifications_ptr_;
   PowerInstancePtr power_ptr_;
   ProcessInstancePtr process_ptr_;
@@ -276,7 +263,6 @@
   ClipboardInstancePtr temporary_clipboard_ptr_;
   ImeInstancePtr temporary_ime_ptr_;
   InputInstancePtr temporary_input_ptr_;
-  IntentHelperInstancePtr temporary_intent_helper_ptr_;
   NotificationsInstancePtr temporary_notifications_ptr_;
   PowerInstancePtr temporary_power_ptr_;
   ProcessInstancePtr temporary_process_ptr_;