Fails InstallableManager if a selected badge icon cannot be fetched.

chrome/browser/installable/installable_logging.cc

Index: chrome/browser/installable/installable_logging.cc
diff --git a/chrome/browser/installable/installable_logging.cc b/chrome/browser/installable/installable_logging.cc
index 926dd2a3d6beadadfe3fbd6c43e79086faa210f4..b7cf0e2b76f3f0d6e4af98af3ea0162b312cc841 100644
--- a/chrome/browser/installable/installable_logging.cc
+++ b/chrome/browser/installable/installable_logging.cc
@@ -50,9 +50,9 @@ static const char kNoAcceptableIconMessage[] =
     "a %spx square icon is required, but no supplied icon meets this "
     "requirement";
 static const char kCannotDownloadIconMessage[] =
-    "could not download the specified icon";
+    "could not download a required icon from manifest";

[dominickn, 2017/04/07 00:02:34]

Nit: "the manifest"

[F, 2017/04/07 14:43:11]

Done.

 static const char kNoIconAvailableMessage[] =
-    "no icon available to display";
+    "icon downloaded from the manifest was empty or corrupted";
 static const char kPlatformNotSupportedOnAndroidMessage[] =
     "the specified application platform is not supported on Android";
 static const char kNoIdSpecifiedMessage[] =