added support for Firefox 20 on Windows

Change-Id: I23bfc47efcfcf6fd90df6329c0f79e6e0388105f
diff --git a/xpcom/prebuilt/extension/chrome.manifest b/xpcom/prebuilt/extension/chrome.manifest
index 33fac67..53b1225 100644
--- a/xpcom/prebuilt/extension/chrome.manifest
+++ b/xpcom/prebuilt/extension/chrome.manifest
@@ -118,6 +118,7 @@
 # Firefox 20
 binary-component lib/Linux_x86_64-gcc3/ff200/libgwt_dev_ff200.so ABI=Linux_x86_64-gcc3 appversion<=20.0.*
 binary-component lib/Linux_x86-gcc3/ff200/libgwt_dev_ff200.so ABI=Linux_x86-gcc3 appversion<=20.0.*
+binary-component lib/WINNT_x86-msvc/ff200/xpGwtDevPlugin.dll ABI=WINNT_x86-msvc appversion<=20.0.*
 binary-component lib/Darwin-gcc3/ff200/libgwt_dev_ff200.dylib ABI=Darwin_x86_64-gcc3 appversion<=20.0.*
 binary-component lib/Darwin-gcc3/ff200/libgwt_dev_ff200.dylib ABI=Darwin_x86-gcc3 appversion<=20.0.*
 
diff --git a/xpcom/prebuilt/extension/lib/WINNT_x86-msvc/ff200/xpGwtDevPlugin.dll b/xpcom/prebuilt/extension/lib/WINNT_x86-msvc/ff200/xpGwtDevPlugin.dll
new file mode 100755
index 0000000..e4494f9
--- /dev/null
+++ b/xpcom/prebuilt/extension/lib/WINNT_x86-msvc/ff200/xpGwtDevPlugin.dll
Binary files differ