[Profiles] Trim profile names in chrome://settings

And validate them accordingly (all-space names are still empty and invalid).

BUG=405913
TEST=Go to chrome://settings. Try to enter "      " for the profile name. The
textbox should stay red. Enter "     batman    " for the profile name, and save.
The name should be saved as just "batman". Expect some bat signals.

Review URL: https://codereview.chromium.org/532023003

Cr-Commit-Position: refs/heads/master@{#293571}

chrome/browser/resources/options/manage_profile_overlay.html

@@ -13,7 +13,7 @@
           <span id="manage-profile-name-label" for="manage-profile-name"
               i18n-content="manageProfilesNameLabel">
           </span>
-          <input id="manage-profile-name" type="text" required>
+          <input id="manage-profile-name" type="text" pattern=".*\S.*" required>
         </label>
       </div>
       <div id="manage-profile-error-bubble" hidden></div>

chrome/browser/ui/webui/options/create_profile_handler.cc

@@ -8,6 +8,7 @@
 #include "base/files/file_path.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
+#include "base/strings/string_util.h"
 #include "base/value_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
@@ -80,6 +81,7 @@ void CreateProfileHandler::CreateProfile(const base::ListValue* args) {
   bool create_shortcut = false;
   bool supervised_user = false;
   if (args->GetString(0, &name) && args->GetString(1, &icon)) {
+    base::TrimWhitespace(name, base::TRIM_ALL, &name);
     if (args->GetBoolean(2, &create_shortcut)) {
       bool success = args->GetBoolean(3, &supervised_user);
       DCHECK(success);

chrome/browser/ui/webui/options/manage_profile_handler.cc

@@ -9,6 +9,7 @@
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/value_conversions.h"
 #include "base/values.h"
@@ -381,6 +382,7 @@ void ManageProfileHandler::SetProfileIconAndName(const base::ListValue* args) {
   if (!args->GetString(2, &new_profile_name))
     return;
 
+  base::TrimWhitespace(new_profile_name, base::TRIM_ALL, &new_profile_name);
   profiles::UpdateProfileName(profile, new_profile_name);
 }