Ensure WebAPKs installed from the menu do not pollute banner statistics.

chrome/browser/android/banners/app_banner_infobar_delegate_android.h

Index: chrome/browser/android/banners/app_banner_infobar_delegate_android.h
diff --git a/chrome/browser/android/banners/app_banner_infobar_delegate_android.h b/chrome/browser/android/banners/app_banner_infobar_delegate_android.h
index bb4362c5bc61229fe5465bed095f78effa738f03..a83b9c8ef42d519413253f91387681e695e6e981 100644
--- a/chrome/browser/android/banners/app_banner_infobar_delegate_android.h
+++ b/chrome/browser/android/banners/app_banner_infobar_delegate_android.h
@@ -61,13 +61,13 @@ class AppBannerInfoBarDelegateAndroid : public ConfirmInfoBarDelegate {
   void UpdateInstallState(JNIEnv* env,
                           const base::android::JavaParamRef<jobject>& obj);
 
-  // Called when the installation Intent has been handled and focus has been
-  // returned to Chrome.
+  // Called when the native app installation Intent has been handled and focus
+  // has been returned to Chrome.
   void OnInstallIntentReturned(JNIEnv* env,
                                const base::android::JavaParamRef<jobject>& obj,
                                jboolean jis_installing);
 
-  // Called when the InstallerDelegate task has finished.
+  // Called when the native app InstallerDelegate task has finished.
   void OnInstallFinished(JNIEnv* env,
                          const base::android::JavaParamRef<jobject>& obj,
                          jboolean success);
@@ -117,6 +117,9 @@ class AppBannerInfoBarDelegateAndroid : public ConfirmInfoBarDelegate {
   // infobar should be closed as a result of the button press.
   bool AcceptWebApk(content::WebContents* web_contents);
 
+  // Returns false if this delegate is for a WebAPK and was triggered from the
+  // A2HS menu item. Otherwise returns true.
+  bool TriggeredFromBanner() const;
   void SendBannerAccepted();
   void OnWebApkInstallFinished(bool success,
                                const std::string& webapk_package_name);