Replace base::str[n]casecmp with helper functions.

chrome/browser/media_galleries/fileapi/media_path_filter.cc

Index: chrome/browser/media_galleries/fileapi/media_path_filter.cc
diff --git a/chrome/browser/media_galleries/fileapi/media_path_filter.cc b/chrome/browser/media_galleries/fileapi/media_path_filter.cc
index 0212e1113603514ee0670006c2a3f71c093c8ec0..5b27f1019ab286700e79dd1abbbececbc51b89b9 100644
--- a/chrome/browser/media_galleries/fileapi/media_path_filter.cc
+++ b/chrome/browser/media_galleries/fileapi/media_path_filter.cc
@@ -126,15 +126,12 @@ bool MediaPathFilter::ShouldSkip(const base::FilePath& path) {
   const char win_98_recycle_bin_name[] = "RECYCLED";
   const char win_xp_recycle_bin_name[] = "RECYCLER";
   const char win_vista_recycle_bin_name[] = "$Recycle.bin";
-  if ((base::strncasecmp(base_name.c_str(),
-                         win_98_recycle_bin_name,
-                         strlen(win_98_recycle_bin_name)) == 0) ||
-      (base::strncasecmp(base_name.c_str(),
-                         win_xp_recycle_bin_name,
-                         strlen(win_xp_recycle_bin_name)) == 0) ||
-      (base::strncasecmp(base_name.c_str(),
-                         win_vista_recycle_bin_name,
-                         strlen(win_vista_recycle_bin_name)) == 0))
+  if (base::StartsWith(base_name, win_98_recycle_bin_name,
+                       base::CompareCase::INSENSITIVE_ASCII) ||
+      base::StartsWith(base_name, win_xp_recycle_bin_name,
+                       base::CompareCase::INSENSITIVE_ASCII) ||
+      base::StartsWith(base_name, win_vista_recycle_bin_name,
+                       base::CompareCase::INSENSITIVE_ASCII))
     return true;
 #endif  // defined(OS_WIN)
   return false;