Unify TypeError messages

This CL fixes some nits in TypeError messages, unifying the form of
kDefineDisallowed and kObjectNotExtensible to match what is used by the
majority of the other messages:
  * "Cannot" vs. "Can't" -> choose "Cannot"
  * "property:%" -> "property %"
  * omit the full-stop at the end of the message

BUG=v8:5673

Review-Url: https://codereview.chromium.org/2686233008
Cr-Commit-Position: refs/heads/master@{#43150}

src/messages.h

@@ -296,7 +296,7 @@ class ErrorUtils : public AllStatic {
   T(DebuggerFrame, "Debugger: Invalid frame index.")                           \
   T(DebuggerType, "Debugger: Parameters have wrong types.")                    \
   T(DeclarationMissingInitializer, "Missing initializer in % declaration")     \
-  T(DefineDisallowed, "Cannot define property:%, object is not extensible.")   \
+  T(DefineDisallowed, "Cannot define property %, object is not extensible")    \
   T(DetachedOperation, "Cannot perform % on a detached ArrayBuffer")           \
   T(DuplicateTemplateProperty, "Object template has duplicate property '%'")   \
   T(ExtendsValueNotConstructor,                                                \
@@ -352,7 +352,7 @@ class ErrorUtils : public AllStatic {
   T(ObjectGetterExpectingFunction,                                             \
     "Object.prototype.__defineGetter__: Expecting function")                   \
   T(ObjectGetterCallable, "Getter must be a function: %")                      \
-  T(ObjectNotExtensible, "Can't add property %, object is not extensible")     \
+  T(ObjectNotExtensible, "Cannot add property %, object is not extensible")    \
   T(ObjectSetterExpectingFunction,                                             \
     "Object.prototype.__defineSetter__: Expecting function")                   \
   T(ObjectSetterCallable, "Setter must be a function: %")                      \

test/mjsunit/messages.js

@@ -115,7 +115,7 @@ test(function() {
   var o = {};
   Object.preventExtensions(o);
   Object.defineProperty(o, "x", { value: 1 });
-}, "Cannot define property:x, object is not extensible.", TypeError);
+}, "Cannot define property x, object is not extensible", TypeError);
 
 // kFirstArgumentNotRegExp
 test(function() {
@@ -242,7 +242,7 @@ test(function() {
   var o = {};
   Object.freeze(o);
   o.a = 1;
-}, "Can't add property a, object is not extensible", TypeError);
+}, "Cannot add property a, object is not extensible", TypeError);
 
 // kObjectSetterExpectingFunction
 test(function() {

test/webkit/preventExtensions-expected.txt

@@ -39,7 +39,7 @@ PASS "use strict"; var o = {}; Object.preventExtensions(o); o.__proto__ = { newP
 PASS Object.preventExtensions(Math); Math.sqrt(4) is 2
 PASS var arr = Object.preventExtensions([]); arr[0] = 42; arr[0] is undefined.
 PASS var arr = Object.preventExtensions([]); arr[0] = 42; arr.length is 0
-PASS "use strict"; var arr = Object.preventExtensions([]); arr[0] = 42; arr[0] threw exception TypeError: Can't add property 0, object is not extensible.
+PASS "use strict"; var arr = Object.preventExtensions([]); arr[0] = 42; arr[0] threw exception TypeError: Cannot add property 0, object is not extensible.
 PASS obj.foo is 1
 PASS Object.isFrozen(func) is true
 PASS func.prototype === 42 is false