base: Remove the string logging from CHECK().

ui/base/ime/input_method_initializer.cc

Index: ui/base/ime/input_method_initializer.cc
diff --git a/ui/base/ime/input_method_initializer.cc b/ui/base/ime/input_method_initializer.cc
index 1ac3c27aa46fc5af7103d3015315a4b5c6959cc6..c368c5f87f2149bf40901a96cecf81d350128128 100644
--- a/ui/base/ime/input_method_initializer.cc
+++ b/ui/base/ime/input_method_initializer.cc
@@ -43,9 +43,8 @@ void InitializeInputMethodForTesting() {
     g_linux_input_method_context_factory = new FakeInputMethodContextFactory();
   const LinuxInputMethodContextFactory* factory =
       LinuxInputMethodContextFactory::instance();
-  CHECK(!factory || factory == g_linux_input_method_context_factory)
-      << "LinuxInputMethodContextFactory was already initialized somewhere "
-      << "else.";
+  // LinuxInputMethodContextFactory was already initialized somewhere else.
+  CHECK(!factory || factory == g_linux_input_method_context_factory);
   LinuxInputMethodContextFactory::SetInstance(
       g_linux_input_method_context_factory);
 #endif
@@ -57,8 +56,8 @@ void ShutdownInputMethodForTesting() {
 #elif defined(USE_AURA) && defined(OS_LINUX)
   const LinuxInputMethodContextFactory* factory =
       LinuxInputMethodContextFactory::instance();
-  CHECK(!factory || factory == g_linux_input_method_context_factory)
-      << "An unknown LinuxInputMethodContextFactory was set.";
+  // An unknown LinuxInputMethodContextFactory was set.
+  CHECK(!factory || factory == g_linux_input_method_context_factory);
   LinuxInputMethodContextFactory::SetInstance(NULL);
   delete g_linux_input_method_context_factory;
   g_linux_input_method_context_factory = NULL;