Introduce the MicButtonTargeter class

ui/app_list/test/app_list_test_view_delegate.cc

Index: ui/app_list/test/app_list_test_view_delegate.cc
diff --git a/ui/app_list/test/app_list_test_view_delegate.cc b/ui/app_list/test/app_list_test_view_delegate.cc
index ab712bfadbd1ea2224b1f6bd8701ad77da792a66..4052ea60160b06a1417c6168ef4bd0be200bba03 100644
--- a/ui/app_list/test/app_list_test_view_delegate.cc
+++ b/ui/app_list/test/app_list_test_view_delegate.cc
@@ -52,6 +52,7 @@ class TestSigninDelegate : public SigninDelegate {
 
 AppListTestViewDelegate::AppListTestViewDelegate()
     : dismiss_count_(0),
+      toggle_speech_recognition_count_(0),
       open_search_result_count_(0),
       test_signin_delegate_(new TestSigninDelegate),
       model_(new AppListTestModel),
@@ -67,6 +68,12 @@ void AppListTestViewDelegate::SetSignedIn(bool signed_in) {
                     OnProfilesChanged());
 }
 
+int AppListTestViewDelegate::GetToggleSpeechRecognitionCountAndReset() {
+  int count = toggle_speech_recognition_count_;
+  toggle_speech_recognition_count_ = 0;
+  return count;
+}
+
 bool AppListTestViewDelegate::ForceNativeDesktop() const {
   return false;
 }
@@ -114,6 +121,10 @@ void AppListTestViewDelegate::Dismiss() {
   ++dismiss_count_;
 }
 
+void AppListTestViewDelegate::ToggleSpeechRecognition() {
+  ++toggle_speech_recognition_count_;
+}
+
 gfx::ImageSkia AppListTestViewDelegate::GetWindowIcon() {
   return gfx::ImageSkia();
 }