Fix Winrt Project generation

Change-Id: I5688f17d8fc18f36363afbfd2728b0b3475fb2bd
Reviewed-on: https://chromium-review.googlesource.com/260606
Tested-by: Cooper Partin <coopp@microsoft.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

generate_winrt_projects.py

@@ -28,7 +28,7 @@ def generateProjects(generation_dir, build_winphone):
     gyp_cmd += ' -D angle_enable_d3d9=0'
     gyp_cmd += ' -D angle_enable_gl=0'
     gyp_cmd += ' -D angle_standalone=1'
-    gyp_cmd += ' ' + os.path.join(script_dir, 'all.gyp')
+    gyp_cmd += ' ' + os.path.join(script_dir, 'angle.gyp')
 
     print 'Generating projects to ' + generation_dir + ' from gyp files...'
     print gyp_cmd