Update third_party/protobuf to protobuf-v3.0.0-beta-3

third_party/protobuf/src/google/protobuf/util/field_comparator.h

Index: third_party/protobuf/src/google/protobuf/util/field_comparator.h
diff --git a/third_party/protobuf/src/google/protobuf/util/field_comparator.h b/third_party/protobuf/src/google/protobuf/util/field_comparator.h
index 8b83c69f2b55e0be06a438f01cf0e06373f05add..1b4d65b0e6d3d0ab3ee6a18a174669d73f2c26dc 100644
--- a/third_party/protobuf/src/google/protobuf/util/field_comparator.h
+++ b/third_party/protobuf/src/google/protobuf/util/field_comparator.h
@@ -91,9 +91,9 @@ class LIBPROTOBUF_EXPORT FieldComparator {
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldComparator);
 };
 
-// Basic implementation of FieldComparator.  Supports four modes of floating
+// Basic implementation of FieldComparator.  Supports three modes of floating
 // point value comparison: exact, approximate using MathUtil::AlmostEqual
-// method, and arbitrarilly precise using MathUtil::WithinFractionOrMargin.
+// method, and arbitrarily precise using MathUtil::WithinFractionOrMargin.
 class LIBPROTOBUF_EXPORT DefaultFieldComparator : public FieldComparator {
  public:
   enum FloatComparison {