Fix "unreachable code" warning (MSVC warning 4702) in

chrome/utility/cloud_print/pwg_encoder.cc

Index: chrome/utility/cloud_print/pwg_encoder.cc
===================================================================
--- chrome/utility/cloud_print/pwg_encoder.cc	(revision 264665)
+++ chrome/utility/cloud_print/pwg_encoder.cc	(working copy)
@@ -202,16 +202,14 @@
   switch (image.colorspace()) {
     case BitmapImage::RGBA:
       return EncodePageWithColorspace<RGBA8>(image, pwg_header_info, output);
-      break;
+
     case BitmapImage::BGRA:
       return EncodePageWithColorspace<BGRA8>(image, pwg_header_info, output);
-      break;
+
     default:
       LOG(ERROR) << "Unsupported colorspace.";
       return false;
   }
-
-  EncodePageHeader(image, pwg_header_info, output);
 }
 
 template <typename InputStruct>