Pepper: add PPB interfaces that are missing in histograms.xml.

ppapi/tools/pepper_hash_for_uma.cc

Index: ppapi/tools/pepper_hash_for_uma.cc
diff --git a/ppapi/tools/pepper_hash_for_uma.cc b/ppapi/tools/pepper_hash_for_uma.cc
index 6e38cfdd4b6483c7fe879cc50e17f4dd401a3037..33e59d086bef50dcd278d230cf2e4ba328f2251c 100644
--- a/ppapi/tools/pepper_hash_for_uma.cc
+++ b/ppapi/tools/pepper_hash_for_uma.cc
@@ -13,6 +13,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <algorithm>
+#include <vector>
+
 #include "base/hash.h"
 #include "base/macros.h"
 
@@ -25,13 +28,19 @@ int main(int argc, char **argv) {
             argv[0]);
     return 1;
   }
+  std::vector<std::pair<uint32, char*>> hashes;
   for (int i = 1; i < argc; i++) {
     uint32 data = base::Hash(argv[i], strlen(argv[i]));
 
     // Strip off the signed bit because UMA doesn't support negative values,
     // but takes a signed int as input.
     int hash = static_cast<int>(data & 0x7fffffff);
-    printf("<int value=\"%d\" label=\"%s\"/>\n", hash, argv[i]);
+    hashes.push_back(std::make_pair(hash, argv[i]));
+  }
+  std::sort(hashes.begin(), hashes.end());
+  for ( auto &hash : hashes ) {

[Alexei Svitkine (slow), 2015/02/25 22:14:21]

Nit: Per chromium format:

for (const auto& hash : hashes)

[bbudge, 2015/02/26 00:13:57]

Done.

+    printf("<int value=\"%d\" label=\"%s\"/>\n", hash.first, hash.second);
   }
+
   return 0;
 }