Show alert failure for reloading unpacked extensions with bad manifest

chrome/browser/extensions/extension_error_reporter.cc

Index: chrome/browser/extensions/extension_error_reporter.cc
diff --git a/chrome/browser/extensions/extension_error_reporter.cc b/chrome/browser/extensions/extension_error_reporter.cc
index 837402bea19937013fae60b73f8da0d825aefec4..acbf08e662d18aa8021d2cbad21826d71451da58 100644
--- a/chrome/browser/extensions/extension_error_reporter.cc
+++ b/chrome/browser/extensions/extension_error_reporter.cc
@@ -55,6 +55,9 @@ void ExtensionErrorReporter::ReportLoadError(
                          path_str.c_str(),
                          error.c_str()));
   ReportError(message, be_noisy);
+  FOR_EACH_OBSERVER(Observer,
+                    observers_,
+                    OnLoadFailure(extension_path, error));
 }
 
 void ExtensionErrorReporter::ReportError(const base::string16& message,
@@ -86,3 +89,13 @@ const std::vector<base::string16>* ExtensionErrorReporter::GetErrors() {
 void ExtensionErrorReporter::ClearErrors() {
   errors_.clear();
 }
+
+void ExtensionErrorReporter::AddObserver(

[Devlin, 2014/07/10 21:12:45]

Don't know how I've missed this in the last 10 patch sets but...
I think this all fits on one line.

+    Observer* observer) {
+  observers_.AddObserver(observer);
+}
+
+void ExtensionErrorReporter::RemoveObserver(
+    Observer* observer) {
+  observers_.RemoveObserver(observer);
+}