Add tooltips to profile name when truncated

chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm

Index: chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
diff --git a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
index 2c8a22324cf495473a723774790156fe4271c5b1..415e592401dc36cf29002c7fb0fd95c2c29e72a8 100644
--- a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
@@ -701,6 +701,13 @@ class ActiveProfileObserverBridge : public AvatarMenuObserver,
           IDS_PROFILES_NEW_AVATAR_MENU_EDIT_NAME_ACCESSIBLE_NAME,
           base::SysNSStringToUTF16(profileName))
                                     forAttribute:NSAccessibilityTitleAttribute];
+
+      NSSize textSize = [profileName sizeWithAttributes:
+          @{NSFontAttributeName: [profileNameTextField_ font]}];
+
+      if (textSize.width > frameRect.size.width - [hoverImage size].width * 2) {
+          [self setToolTip:profileName];
+      }
     }
 
     [[self cell] accessibilitySetOverrideValue:NSAccessibilityButtonRole
@@ -1805,6 +1812,15 @@ class ActiveProfileObserverBridge : public AvatarMenuObserver,
   [profileButton setTarget:self];
   [profileButton setAction:@selector(switchToProfile:)];
 
+  NSSize textSize = [[profileButton title] sizeWithAttributes:
+      @{NSFontAttributeName: [profileButton font]}];
+
+  if (lroundf(textSize.width) >

[groby-ooo-7-16, 2015/02/20 17:01:07]

Why round here?

+      rect.size.width - kSmallImageSide -
+      kImageTitleSpacing - kHorizontalSpacing) {
+      [profileButton setToolTip:[profileButton title]];
+  }
+
   return profileButton.autorelease();
 }