base: Remove the string logging from CHECK().

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 320fbd01f1d0c1880e14d89ebe50712c1a34bcb8..74cf8da3d2cbcd0b92c7f4c00a104d58940de46b 100644
--- a/chrome/browser/extensions/extension_error_reporter.cc
+++ b/chrome/browser/extensions/extension_error_reporter.cc
@@ -31,7 +31,8 @@ void ExtensionErrorReporter::Init(bool enable_noisy_errors) {
 
 // static
 ExtensionErrorReporter* ExtensionErrorReporter::GetInstance() {
-  CHECK(instance_) << "Init() was never called";
+  // Init() was never called
+  CHECK(instance_);
   return instance_;
 }
 
@@ -67,8 +68,8 @@ void ExtensionErrorReporter::ReportLoadError(
 void ExtensionErrorReporter::ReportError(const base::string16& message,
                                          bool be_noisy) {
   // NOTE: There won't be a |ui_task_runner_| in the unit test environment.
-  CHECK(!ui_task_runner_ || ui_task_runner_->BelongsToCurrentThread())
-      << "ReportError can only be called from the UI thread.";
+  // ReportError can only be called from the UI thread.
+  CHECK(!ui_task_runner_ || ui_task_runner_->BelongsToCurrentThread());
 
   errors_.push_back(message);