[Coverity] Pass-by-ref instead of pass-by-val

CID=104687,104688
CID_COUNT=2

R=sky@chromium.org
BUG=none


Review URL: https://chromiumcodereview.appspot.com/10823385

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152430 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/favicon/select_favicon_frames.cc

@@ -24,7 +24,9 @@ size_t BiggestCandidate(const std::vector<SkBitmap>& bitmaps) {
   return max_index;
 }
 
-SkBitmap PadWithBorder(SkBitmap contents, int desired_size, int source_size) {
+SkBitmap PadWithBorder(const SkBitmap& contents,
+                       int desired_size,
+                       int source_size) {
   SkBitmap bitmap;
   bitmap.setConfig(
       SkBitmap::kARGB_8888_Config, desired_size, desired_size);
@@ -41,7 +43,7 @@ SkBitmap PadWithBorder(SkBitmap contents, int desired_size, int source_size) {
   return bitmap;
 }
 
-SkBitmap SampleNearestNeighbor(SkBitmap contents, int desired_size) {
+SkBitmap SampleNearestNeighbor(const SkBitmap& contents, int desired_size) {
   SkBitmap bitmap;
   bitmap.setConfig(
       SkBitmap::kARGB_8888_Config, desired_size, desired_size);