Add optimized ICs for new CanvasArray types. This is a follow-on CL to...

src/objects.cc

Index: src/objects.cc
===================================================================
--- src/objects.cc	(revision 3112)
+++ src/objects.cc	(working copy)
@@ -7313,7 +7313,7 @@
       cast_value = static_cast<ValueType>(int_value);
     } else if (value->IsHeapNumber()) {
       double double_value = HeapNumber::cast(value)->value();
-      cast_value = static_cast<ValueType>(double_value);
+      cast_value = static_cast<ValueType>(DoubleToInt32(double_value));
     } else {
       // Clamp undefined to zero (default). All other types have been
       // converted to a number type further up in the call chain.
@@ -7365,7 +7365,7 @@
       cast_value = static_cast<uint32_t>(int_value);
     } else if (value->IsHeapNumber()) {
       double double_value = HeapNumber::cast(value)->value();
-      cast_value = static_cast<uint32_t>(double_value);
+      cast_value = static_cast<uint32_t>(DoubleToUint32(double_value));
     } else {
       // Clamp undefined to zero (default). All other types have been
       // converted to a number type further up in the call chain.