libwebm: Remove STL dependency from Android build.

Change-Id: Id2f378f2fa8350aae97394bd8b21918cff4d179a

mkvmuxer.cpp

@@ -12,7 +12,6 @@
 #include <cstdlib>
 #include <cstring>
 #include <ctime>
-#include <limits>
 #include <new>
 
 #include "mkvmuxerutil.hpp"
@@ -1466,7 +1465,7 @@ bool Cluster::DoWriteBlock(
   if (rel_timecode < 0)
     return false;
 
-  if (rel_timecode > std::numeric_limits<int16>::max())
+  if (rel_timecode > kMaxBlockTimecode)
     return false;
 
   if (write_block == NULL)
@@ -2347,7 +2346,7 @@ int Segment::TestFrame(uint64 track_number,
 
   const int64 delta_timecode = frame_timecode - last_cluster_timecode;
 
-  if (delta_timecode > std::numeric_limits<int16>::max())
+  if (delta_timecode > kMaxBlockTimecode)
     return 2;
 
   // We decide to create a new cluster when we have a video keyframe.

mkvmuxerutil.cpp

@@ -21,7 +21,6 @@
 #include <cstring>
 #include <ctime>
 
-#include <limits>
 #include <new>
 
 #include "mkvwriter.hpp"
@@ -335,7 +334,7 @@ uint64 WriteSimpleBlock(IMkvWriter* writer,
   //  is a signed, 16-bit integer).  However, as a simplification we
   //  only permit non-negative cluster-relative timestamps for blocks.
 
-  if (timecode < 0 || timecode > std::numeric_limits<int16>::max())
+  if (timecode < 0 || timecode > kMaxBlockTimecode)
     return false;
 
   if (WriteID(writer, kMkvSimpleBlock))

mkvmuxerutil.hpp

@@ -16,6 +16,7 @@ namespace mkvmuxer {
 class IMkvWriter;
 
 const uint64 kEbmlUnknownValue = 0x01FFFFFFFFFFFFFFULL;
+const int64 kMaxBlockTimecode = 0x07FFFLL;
 
 // Writes out |value| in Big Endian order. Returns 0 on success.
 int32 SerializeInt(IMkvWriter* writer, int64 value, int32 size);