Fix wrong truncation of notification popup messages in ash.

views::Label control first calculates the size of the text,
and then tries to render the text in the exact size of rectangle.
If < is used instead of <= in the patched line, the control
flows to the BreakIterator mode, that sometimes computes a
larger width value and causes truncation.

BUG=155663

Review URL: https://codereview.chromium.org/11150013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@162308 0039d316-1c4b-4281-b951-d872f2087c98

ui/base/text/text_elider.cc

@@ -907,7 +907,7 @@ bool RectangleText::Finalize() {
 
 void RectangleText::AddLine(const string16& line) {
   const int line_width = font_.GetStringWidth(line);
-  if (line_width < available_pixel_width_) {
+  if (line_width <= available_pixel_width_) {
     AddToCurrentLineWithWidth(line, line_width);
   } else {
     // Iterate over positions that are valid to break the line at. In general,