Skip installation process if WebAPK is already installed.

chrome/browser/android/webapps/add_to_homescreen_manager.h

Index: chrome/browser/android/webapps/add_to_homescreen_manager.h
diff --git a/chrome/browser/android/webapps/add_to_homescreen_manager.h b/chrome/browser/android/webapps/add_to_homescreen_manager.h
index 6d87e1a794ed1b906122f8dea4e498ddfeb845cc..bc72a2af69514e728d3bbb0e8b2173b187f61fee 100644
--- a/chrome/browser/android/webapps/add_to_homescreen_manager.h
+++ b/chrome/browser/android/webapps/add_to_homescreen_manager.h
@@ -56,7 +56,7 @@ class AddToHomescreenManager : public AddToHomescreenDataFetcher::Observer {
 
   // Called only when the AddToHomescreenDataFetcher has retrieved all of the
   // data needed to install a WebAPK.
-  void CreateInfoBarForWebAPK(const ShortcutInfo& info, const SkBitmap& icon);
+  void CreateInfoBarForWebApk(const ShortcutInfo& info, const SkBitmap& icon);
 
   void RecordAddToHomescreen();
 
@@ -71,11 +71,11 @@ class AddToHomescreenManager : public AddToHomescreenDataFetcher::Observer {
   // Points to the Java object.
   base::android::ScopedJavaGlobalRef<jobject> java_ref_;
 

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

Everyone has a slightly different commenting style. It is unclear to me that
your version of the comments is better than the existing comments. Your version
does not seem to be worse than the existing comments either.

I would advise not to modify the existing comments because:
- it is unclear that your version is better.
- you do not have changes in this file. If you had added a member variable in
this CL you could probably get away with changing the comments for an unrelated
member variable.

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

Done.

-  // Whether the user has requested that a shortcut be added while a fetch was
-  // in progress.
+  // Indicates whether the user has requested that a shortcut be added while a
+  // fetch was in progress.
   bool add_shortcut_pending_;
 
-  // Whether the site is WebAPK-compatible.
+  // Indicates whether the site is WebAPK-compatible.
   bool is_webapk_compatible_;
 
   // Fetches data required to add a shortcut.