Fix constant in SetCurrentThreadName.

TBR=juberti@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/46329004

Cr-Commit-Position: refs/heads/master@{#9202}
diff --git a/webrtc/base/win32.cc b/webrtc/base/win32.cc
index fa75559..15ed11b 100644
--- a/webrtc/base/win32.cc
+++ b/webrtc/base/win32.cc
@@ -460,7 +460,7 @@
     LPCSTR szName;
     DWORD dwThreadID;
     DWORD dwFlags;
-  } threadname_info = {0x100, name, static_cast<DWORD>(-1), 0};
+  } threadname_info = {0x1000, name, static_cast<DWORD>(-1), 0};
 
   __try {
     ::RaiseException(0x406D1388, 0, sizeof(threadname_info) / sizeof(DWORD),