Rename best icon to best primary icon in Web app related code.

chrome/browser/android/webapk/webapk_update_data_fetcher.h

Index: chrome/browser/android/webapk/webapk_update_data_fetcher.h
diff --git a/chrome/browser/android/webapk/webapk_update_data_fetcher.h b/chrome/browser/android/webapk/webapk_update_data_fetcher.h
index 03f3dac3f35a10f28e4cd857265ed563848602ff..8e6ebf864765dfff8fa6b15bc41ee6897d26bf52 100644
--- a/chrome/browser/android/webapk/webapk_update_data_fetcher.h
+++ b/chrome/browser/android/webapk/webapk_update_data_fetcher.h
@@ -62,11 +62,11 @@ class WebApkUpdateDataFetcher : public content::WebContentsObserver {
   void OnDidGetInstallableData(const InstallableData& installable_data);
 
   // Called with the computed Murmur2 hash for the app icon.
-  void OnGotIconMurmur2Hash(const std::string& best_icon_murmur2_hash);
+  void OnGotIconMurmur2Hash(const std::string& best_primary_icon_murmur2_hash);
 
   void OnDataAvailable(const ShortcutInfo& info,
-                       const std::string& best_icon_murmur2_hash,
-                       const SkBitmap& best_icon);
+                       const std::string& best_primary_icon_murmur2_hash,
+                       const SkBitmap& best_primary_icon);
 
   // Called when a page has no Web Manifest or the Web Manifest is not WebAPK
   // compatible.
@@ -92,7 +92,7 @@ class WebApkUpdateDataFetcher : public content::WebContentsObserver {
 
   // Downloaded data for |web_manifest_url_|.
   ShortcutInfo info_;
-  SkBitmap best_icon_;
+  SkBitmap best_primary_icon_;
 
   base::WeakPtrFactory<WebApkUpdateDataFetcher> weak_ptr_factory_;