Remove the dependency to ws2_32.dll from talk_base::ThreadManager and talk_base::Thread.

third_party/libjingle/overrides/talk/base/win32.cc

Index: third_party/libjingle/overrides/talk/base/win32.cc
===================================================================
--- third_party/libjingle/overrides/talk/base/win32.cc	(revision 124320)
+++ third_party/libjingle/overrides/talk/base/win32.cc	(working copy)
@@ -63,10 +63,7 @@
   return NULL;
 }
 
-// As above, but for inet_pton. Wraps inet_addr for v4, and implements inet_pton
-// for v6. Slightly more permissive than the RFC specified inet_pton, as it uses
-// windows' inet_addr which permits octal and hexadecimal values in v4
-// addresses, while inet_pton only allows decimal.
+// As above, but for inet_pton. Implements inet_pton for v4 and v6.
 // Note that our inet_ntop will output normal 'dotted' v4 addresses only.
 int win32_inet_pton(int af, const char* src, void* dst) {
   if (!src || !dst) {
@@ -172,14 +169,45 @@
 }
 
 // Helper function for inet_pton for IPv4 addresses.
-// Uses win32's inet_addr.
+// |src| points to a character string containing an IPv4 network address in
+// dotted-decimal format, "ddd.ddd.ddd.ddd", where ddd is a decimal number
+// of up to three digits in the range 0 to 255.
+// The address is converted and copied to dst,
+// which must be sizeof(struct in_addr) (4) bytes (32 bits) long.
 int inet_pton_v4(const char* src, void* dst) {
-  uint32 ip = inet_addr(src);
-  if (ip == 0xFFFFFFFF && strcmp(src, "255.255.255.255") != 0) {
+  const int kIpv4AddressSize = 4;
+  int num_dot = 0;
+  const char* src_pos = src;
+  unsigned char result[kIpv4AddressSize] = {0};
+
+  while (*src_pos != 0) {
+    // strtol won't treat whitespace characters in the begining as an error,
+    // so check to ensure this is started with digit before passing to strtol.
+    if (!isdigit(*src_pos)) {
+      return 0;
+    }
+    char* end_pos;
+    long int value = strtol(src_pos, &end_pos, 10);
+    if (value < 0 || value > 255 || src_pos == end_pos) {
+      return 0;
+    }
+    result[num_dot] = value;
+    if (*end_pos == 0) {
+      break;
+    }
+    src_pos = end_pos;
+    if (*src_pos == '.') {
+      ++num_dot;
+      if (num_dot > kIpv4AddressSize - 1) {
+        return 0;
+      }
+    }
+    ++src_pos;
+  }
+  if (num_dot != kIpv4AddressSize - 1) {
     return 0;
   }
-  struct in_addr* dst_as_in_addr = reinterpret_cast<struct in_addr*>(dst);
-  dst_as_in_addr->s_addr = ip;
+  memcpy(dst, result, sizeof(result));
   return 1;
 }