[inspector] removed ArrayLengthHelperFunction specialization for empty array

There is no zero length array usage in inspector codebase. We can safely remove template specialization.

It was reverted to revert another patch and is good by itself.

BUG=chromium:635948
TBR=jochen@chromium.org

Review-Url: https://codereview.chromium.org/2340193002
Cr-Commit-Position: refs/heads/master@{#39454}

src/inspector/Allocator.h

@@ -27,11 +27,6 @@ enum NotNullTagEnum { NotNullLiteral };
 // gives an error if passed a non-array.
 template <typename T, std::size_t Size>
 char (&ArrayLengthHelperFunction(T (&)[Size]))[Size];
-// GCC needs some help to deduce a 0 length array.
-#if defined(__GNUC__)
-template <typename T>
-char (&ArrayLengthHelperFunction(T (&)[0]))[0];
-#endif
 #define V8_INSPECTOR_ARRAY_LENGTH(array) \
   sizeof(::ArrayLengthHelperFunction(array))
 

src/v8.gyp

@@ -1756,7 +1756,6 @@
             4996,  # Deprecated function call.
           ],
           'cflags': [
-            '-Wno-zero-length-array',
             '-Wno-shorten-64-to-32',
             '-Wno-deprecated-declarations',
           ],