base: Remove the string logging from CHECK().

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index dcf863d1f89a10a9078d6d48ac2a5a09f7b5e334..73960ef127d796a736f6889f48de41f5f62323a0 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -430,7 +430,8 @@ Profile* CreatePrimaryProfile(const content::MainFunctionParams& parameters,
   // TODO(port): fix this. See comments near the definition of |user_data_dir|.
   // It is better to CHECK-fail here than it is to silently exit because of
   // missing code in the above test.
-  CHECK(profile) << "Cannot get default profile.";
+  // Cannot get default profile.
+  CHECK(profile);
 
 #else
   profile = GetStartupProfile(user_data_dir, parsed_command_line);
@@ -676,9 +677,7 @@ void ChromeBrowserMainParts::SetupFieldTrials() {
     bool result = variations::AssociateParamsFromString(
         command_line->GetSwitchValueASCII(
             variations::switches::kForceFieldTrialParams));
-    CHECK(result) << "Invalid --"
-                  << variations::switches::kForceFieldTrialParams
-                  << " list specified.";
+    CHECK(result);
   }
 
   // Ensure any field trials specified on the command line are initialized.
@@ -693,8 +692,7 @@ void ChromeBrowserMainParts::SetupFieldTrials() {
     bool result = base::FieldTrialList::CreateTrialsFromString(
         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
         unforceable_field_trials);
-    CHECK(result) << "Invalid --" << switches::kForceFieldTrials
-                  << " list specified.";
+    CHECK(result);
   }
 
   std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
@@ -713,8 +711,7 @@ void ChromeBrowserMainParts::SetupFieldTrials() {
   bool result = http_header_provider->ForceVariationIds(
       command_line->GetSwitchValueASCII(switches::kForceVariationIds),
       &variation_ids);
-  CHECK(result) << "Invalid list of variation ids specified (either in --"
-                << switches::kForceVariationIds << " or in chrome://flags)";
+  CHECK(result);
 
   feature_list->InitializeFromCommandLine(
       command_line->GetSwitchValueASCII(switches::kEnableFeatures),
@@ -1091,7 +1088,8 @@ int ChromeBrowserMainParts::PreCreateThreadsImpl() {
     ShowMissingLocaleMessageBox();
     return chrome::RESULT_CODE_MISSING_DATA;
   }
-  CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
+  // Locale could not be found for |locale|.
+  CHECK(!loaded_locale.empty());
   browser_process_->SetApplicationLocale(loaded_locale);
 
   {