Generate tests.sln for WinRT, and make it include dEQP projects

build/ANGLE.gyp

@@ -11,17 +11,16 @@
             'dependencies':
             [
                 '../src/angle.gyp:*',
+                '../src/tests/tests.gyp:*',
             ],
             'conditions':
             [
-                # Generate tests and sample projects for classic desktop
-                # builds only.
+                # Don't generate samples for WinRT
                 ['angle_build_winrt==0',
                 {
                     'dependencies':
                     [
                         '../samples/samples.gyp:*',
-                        '../src/tests/tests.gyp:*',
                     ],
                 }],
             ],

src/tests/deqp_support/angle_deqp_libtester_main.cpp

@@ -55,9 +55,16 @@ const char *g_dEQPDataSearchDirs[] =
 #if (DE_OS == DE_OS_WIN32)
 deBool deIsDir(const char *filename)
 {
-    DWORD attribs = GetFileAttributesA(filename);
-    return (attribs != INVALID_FILE_ATTRIBUTES) &&
-           ((attribs & FILE_ATTRIBUTE_DIRECTORY) > 0);
+    WIN32_FILE_ATTRIBUTE_DATA fileInformation;
+
+    BOOL result = GetFileAttributesExA(filename, GetFileExInfoStandard, &fileInformation);
+    if (result)
+    {
+        DWORD attribs = fileInformation.dwFileAttributes;
+        return (attribs != INVALID_FILE_ATTRIBUTES) && ((attribs & FILE_ATTRIBUTE_DIRECTORY) > 0);
+    }
+
+    return false;
 }
 #elif (DE_OS == DE_OS_UNIX)
 deBool deIsDir(const char *filename)

src/tests/tests.gyp

@@ -42,6 +42,11 @@
             'third_party/rapidjson/include/rapidjson/msinttypes/stdint.h',
         ],
     },
+    'conditions':
+    [
+        # GoogleTest doesn't support WinRT
+        ['angle_build_winrt==0',
+        {
             'targets':
             [
                 {
@@ -73,10 +78,8 @@
                     ],
                 },
             ],
-
-    'conditions':
-    [
-        ['angle_standalone==1',
+        }],
+        ['angle_standalone==1 and angle_build_winrt==0',
         {
             'targets':
             [