Revert "Strtod fast-case that uses DiyFps and cached powers of ten."

src/cached-powers.h

Index: src/cached-powers.h
diff --git a/src/cached-powers.h b/src/cached-powers.h
index 2ae56196a32a896dfaf5a9f1713c2937a8eb6d36..0c7834317032aeee37ea71f301f119aca3a788e7 100644
--- a/src/cached-powers.h
+++ b/src/cached-powers.h
@@ -33,32 +33,10 @@
 namespace v8 {
 namespace internal {
 
-class PowersOfTenCache {
- public:
-
-  // Not all powers of ten are cached. The decimal exponent of two neighboring
-  // cached numbers will differ by kDecimalExponentDistance.
-  static const int kDecimalExponentDistance;
-
-  static const int kMinDecimalExponent;
-  static const int kMaxDecimalExponent;
-
-  // Returns a cached power-of-ten with a binary exponent in the range
-  // [min_exponent; max_exponent] (boundaries included).
-  static void GetCachedPowerForBinaryExponentRange(int min_exponent,
-                                                   int max_exponent,
-                                                   DiyFp* power,
-                                                   int* decimal_exponent);
-
-  // Returns a cached power of ten x ~= 10^k such that
-  //   k <= decimal_exponent < k + kCachedPowersDecimalDistance.
-  // The given decimal_exponent must satisfy
-  //   kMinDecimalExponent <= requested_exponent, and
-  //   requested_exponent < kMaxDecimalExponent + kDecimalExponentDistance.
-  static void GetCachedPowerForDecimalExponent(int requested_exponent,
-                                               DiyFp* power,
-                                               int* found_exponent);
-};
+void GetCachedPowerForBinaryExponentRange(int min_exponent,
+                                          int max_exponent,
+                                          DiyFp* power,
+                                          int* decimal_exponent);
 
 } }  // namespace v8::internal