Remove proactive suggestions methods.

These methods are unused and were missed during earlier clean up.

Bug: b:157237955
Change-Id: Ia3f45af1f206cf817544705af4500ebcf77cf74f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2226916
Commit-Queue: David Black <dmblack@google.com>
Reviewed-by: David Black <dmblack@google.com>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775194}

ash/assistant/assistant_view_delegate_impl.cc

@@ -104,22 +104,6 @@ void AssistantViewDelegateImpl::OnOptInButtonPressed() {
     observer.OnOptInButtonPressed();
 }
 
-void AssistantViewDelegateImpl::OnProactiveSuggestionsCloseButtonPressed() {
-  for (auto& observer : view_delegate_observers_)
-    observer.OnProactiveSuggestionsCloseButtonPressed();
-}
-
-void AssistantViewDelegateImpl::OnProactiveSuggestionsViewHoverChanged(
-    bool is_hovering) {
-  for (auto& observer : view_delegate_observers_)
-    observer.OnProactiveSuggestionsViewHoverChanged(is_hovering);
-}
-
-void AssistantViewDelegateImpl::OnProactiveSuggestionsViewPressed() {
-  for (auto& observer : view_delegate_observers_)
-    observer.OnProactiveSuggestionsViewPressed();
-}
-
 void AssistantViewDelegateImpl::OnSuggestionChipPressed(
     const AssistantSuggestion* suggestion) {
   for (AssistantViewDelegateObserver& observer : view_delegate_observers_)

ash/assistant/assistant_view_delegate_impl.h

@@ -37,9 +37,6 @@ class AssistantViewDelegateImpl : public AssistantViewDelegate {
   void OnNotificationButtonPressed(const std::string& notification_id,
                                    int notification_button_index) override;
   void OnOptInButtonPressed() override;
-  void OnProactiveSuggestionsCloseButtonPressed() override;
-  void OnProactiveSuggestionsViewHoverChanged(bool is_hovering) override;
-  void OnProactiveSuggestionsViewPressed() override;
   void OnSuggestionChipPressed(const AssistantSuggestion* suggestion) override;
 
  private:

ash/assistant/ui/assistant_view_delegate.h

@@ -44,15 +44,6 @@ class COMPONENT_EXPORT(ASSISTANT_UI) AssistantViewDelegateObserver
   // Invoked when the opt in button is pressed.
   virtual void OnOptInButtonPressed() {}
 
-  // Invoked when the proactive suggestions close button is pressed.
-  virtual void OnProactiveSuggestionsCloseButtonPressed() {}
-
-  // Invoked when the hover state of the proactive suggestions view is changed.
-  virtual void OnProactiveSuggestionsViewHoverChanged(bool is_hovering) {}
-
-  // Invoked when the proactive suggestions view is pressed.
-  virtual void OnProactiveSuggestionsViewPressed() {}
-
   // Invoked when a suggestion chip is pressed.
   virtual void OnSuggestionChipPressed(const AssistantSuggestion* suggestion) {}
 };
@@ -113,15 +104,6 @@ class COMPONENT_EXPORT(ASSISTANT_UI) AssistantViewDelegate {
   // Invoked when the opt in button is pressed.
   virtual void OnOptInButtonPressed() {}
 
-  // Invoked when the proactive suggestions close button is pressed.
-  virtual void OnProactiveSuggestionsCloseButtonPressed() {}
-
-  // Invoked when the hover state of the proactive suggestions view is changed.
-  virtual void OnProactiveSuggestionsViewHoverChanged(bool is_hovering) {}
-
-  // Invoked when the proactive suggestions view is pressed.
-  virtual void OnProactiveSuggestionsViewPressed() {}
-
   // Invoked when suggestion chip is pressed.
   virtual void OnSuggestionChipPressed(
       const AssistantSuggestion* suggestion) = 0;

ash/assistant/ui/test_support/mock_assistant_view_delegate.h

@@ -78,12 +78,6 @@ class COMPONENT_EXPORT(ASSISTANT_UI) MockAssistantViewDelegate
 
   MOCK_METHOD(void, OnOptInButtonPressed, (), (override));
 
-  MOCK_METHOD(void, OnProactiveSuggestionsCloseButtonPressed, (), (override));
-
-  MOCK_METHOD(void, OnProactiveSuggestionsViewHoverChanged, (bool), (override));
-
-  MOCK_METHOD(void, OnProactiveSuggestionsViewPressed, (), (override));
-
   MOCK_METHOD(void,
               OnSuggestionChipPressed,
               (const AssistantSuggestion*),