add double support to base::Pickle

base/pickle_unittest.cc

Index: base/pickle_unittest.cc
diff --git a/base/pickle_unittest.cc b/base/pickle_unittest.cc
index bec25d2f5e2f153c68a26e65fc7a2e48d942811f..db529a4a2534e6ceeb96e1784f0e75159b263ac1 100644
--- a/base/pickle_unittest.cc
+++ b/base/pickle_unittest.cc
@@ -24,6 +24,7 @@ const bool testbool1 = false;
 const bool testbool2 = true;
 const uint16 testuint16 = 32123;
 const float testfloat = 3.1415926935f;
+const double testdouble = 2.71828182845904523;
 
 // checks that the result
 void VerifyResult(const Pickle& pickle) {
@@ -55,6 +56,10 @@ void VerifyResult(const Pickle& pickle) {
   EXPECT_TRUE(pickle.ReadFloat(&iter, &outfloat));
   EXPECT_EQ(testfloat, outfloat);
 
+  double outdouble;
+  EXPECT_TRUE(pickle.ReadDouble(&iter, &outdouble));
+  EXPECT_EQ(testdouble, outdouble);
+
   const char* outdata;
   int outdatalen;
   EXPECT_TRUE(pickle.ReadData(&iter, &outdata, &outdatalen));
@@ -77,6 +82,7 @@ TEST(PickleTest, EncodeDecode) {
   EXPECT_TRUE(pickle.WriteBool(testbool2));
   EXPECT_TRUE(pickle.WriteUInt16(testuint16));
   EXPECT_TRUE(pickle.WriteFloat(testfloat));
+  EXPECT_TRUE(pickle.WriteDouble(testdouble));
   EXPECT_TRUE(pickle.WriteData(testdata, testdatalen));
   VerifyResult(pickle);