- Change ALLOW_UNUSED to ALLOW_UNUSED_TYPE and ALLOW_UNUSED_LOCAL to match Chromium.

- Windows: d3dcompiler_46.dll changed to d3dcompiler_47.dll due to 8.1 SDK update (issue #1484).
- Windows: Fix `local variable is initialized but not referenced` warning with Release build (issue #1484).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1962 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/base/cef_build.h

@@ -160,18 +160,26 @@
 #endif
 #endif  // WARN_UNUSED_RESULT
 
+// Annotate a typedef or function indicating it's ok if it's not used.
+// Use like:
+//   typedef Foo Bar ALLOW_UNUSED_TYPE;
+#ifndef ALLOW_UNUSED_TYPE
+#if defined(COMPILER_GCC)
+#define ALLOW_UNUSED_TYPE __attribute__((unused))
+#else
+#define ALLOW_UNUSED_TYPE
+#endif
+#endif  // ALLOW_UNUSED_TYPE
+
 // Annotate a variable indicating it's ok if the variable is not used.
 // (Typically used to silence a compiler warning when the assignment
 // is important for some other reason.)
 // Use like:
-//   int x ALLOW_UNUSED = ...;
-#ifndef ALLOW_UNUSED
-#if defined(COMPILER_GCC)
-#define ALLOW_UNUSED __attribute__((unused))
-#else
-#define ALLOW_UNUSED
+//   int x = ...;
+//   ALLOW_UNUSED_LOCAL(x);
+#ifndef ALLOW_UNUSED_LOCAL
+#define ALLOW_UNUSED_LOCAL(x) false ? (void)x : (void)0
 #endif
-#endif  // ALLOW_UNUSED
 
 #endif  // !BUILDING_CEF_SHARED