Fix line ending with white spaces in some files.

chrome/common/font_descriptor_mac.h

Index: chrome/common/font_descriptor_mac.h
diff --git a/chrome/common/font_descriptor_mac.h b/chrome/common/font_descriptor_mac.h
index 732fc42a120016c3d8044f8b815bd99b1d5ba69d..37b963ede9fca2a929e61b40618a1d576a84ada2 100644
--- a/chrome/common/font_descriptor_mac.h
+++ b/chrome/common/font_descriptor_mac.h
@@ -19,13 +19,13 @@ struct FontDescriptor {
   explicit FontDescriptor(NSFont* font);
 
   FontDescriptor() : font_point_size(0) {}
-  
+
   // Return an autoreleased NSFont corresponding to the font description.
   NSFont* nsFont() const;
 
   // Name of the font.
   string16 font_name;
-  
+
   // Size in points.
   float font_point_size;
 };