Skip installation process if WebAPK is already installed.

chrome/browser/android/webapps/add_to_homescreen_manager.cc

Index: chrome/browser/android/webapps/add_to_homescreen_manager.cc
diff --git a/chrome/browser/android/webapps/add_to_homescreen_manager.cc b/chrome/browser/android/webapps/add_to_homescreen_manager.cc
index 63972125122204e2be072ac8905c613d708f2a87..44da93fbcc7921086584cec73dd4f392b9d33c4e 100644
--- a/chrome/browser/android/webapps/add_to_homescreen_manager.cc
+++ b/chrome/browser/android/webapps/add_to_homescreen_manager.cc
@@ -69,10 +69,11 @@ void AddToHomescreenManager::AddShortcut(
 }
 
 void AddToHomescreenManager::Start(content::WebContents* web_contents) {

[pkotwicz, 2016/09/29 14:18:54]

Thank you for making the changes in this file. They are good changes. However,
the changes are not related to the remainder of this change list. Can you move
them to a separate change list?

[F, 2016/09/30 18:02:02]

Done. Will do :)

-  bool check_installable = false;
+  // Check whether to check WebApk compatibility.
+  bool check_webapk_compatible = false;
   if (ChromeWebApkHost::AreWebApkEnabled() &&
       content::IsOriginSecure(web_contents->GetLastCommittedURL())) {
-    check_installable = true;
+    check_webapk_compatible = true;
   } else {
     ShowDialog();
   }
@@ -82,7 +83,7 @@ void AddToHomescreenManager::Start(content::WebContents* web_contents) {
       ShortcutHelper::GetMinimumHomescreenIconSizeInDp(),
       ShortcutHelper::GetIdealSplashImageSizeInDp(),
       ShortcutHelper::GetMinimumSplashImageSizeInDp(),
-      check_installable, this);
+      check_webapk_compatible, this);
 }
 
 AddToHomescreenManager::~AddToHomescreenManager() {
@@ -152,7 +153,7 @@ void AddToHomescreenManager::OnUserTitleAvailable(
 void AddToHomescreenManager::OnDataAvailable(const ShortcutInfo& info,
                                              const SkBitmap& icon) {
   if (is_webapk_compatible_) {
-    CreateInfoBarForWebAPK(info, icon);
+    CreateInfoBarForWebApk(info, icon);
     return;
   }
 
@@ -167,7 +168,7 @@ void AddToHomescreenManager::OnDataAvailable(const ShortcutInfo& info,
     AddShortcut(info, icon);
 }
 
-void AddToHomescreenManager::CreateInfoBarForWebAPK(const ShortcutInfo& info,
+void AddToHomescreenManager::CreateInfoBarForWebApk(const ShortcutInfo& info,
                                                     const SkBitmap& icon) {
   banners::AppBannerInfoBarDelegateAndroid::Create(
       data_fetcher_->web_contents(), nullptr, info.user_title,