De-bloat SVGPathStringBuilder

Source/wtf/text/StringBuilder.cpp

Index: Source/wtf/text/StringBuilder.cpp
diff --git a/Source/wtf/text/StringBuilder.cpp b/Source/wtf/text/StringBuilder.cpp
index 8f3c522bdfdb4b400974d96f1e27837074dd668a..5dd8cab51cd1ef02a68b35d257416ef6b0b5610c 100644
--- a/Source/wtf/text/StringBuilder.cpp
+++ b/Source/wtf/text/StringBuilder.cpp
@@ -29,6 +29,7 @@
 
 #include "IntegerToStringConversion.h"
 #include "WTFString.h"
+#include "wtf/dtoa.h"
 
 namespace WTF {
 
@@ -346,6 +347,12 @@ void StringBuilder::appendNumber(unsigned long long number)
     numberToStringUnsigned<StringBuilder>(number, this);
 }
 
+void StringBuilder::appendNumber(double number, unsigned precision, TrailingZerosTruncatingPolicy trailingZerosTruncatingPolicy)
+{
+    NumberToStringBuffer buffer;
+    append(numberToFixedPrecisionString(number, precision, buffer, trailingZerosTruncatingPolicy == TruncateTrailingZeros));

[abarth-chromium, 2014/03/26 16:52:31]

This can be made more efficient.  You're creating a temporary string that isn't
needed....

+}
+
 bool StringBuilder::canShrink() const
 {
     // Only shrink the buffer if it's less than 80% full. Need to tune this heuristic!