TypedArray constructor with string shouldn't throw

TypedArray constructor with string shouldn't throw
https://bugs.webkit.org/show_bug.cgi?id=173181

Reviewed by JF Bastien.

JSTests:

We should be coercing primitive arguments to numbers in the various
TypedArray constructors.

* stress/typedarray-constructor.js:

Source/JavaScriptCore:

We should be coercing primitive arguments to numbers in the various
TypedArray constructors.

* runtime/JSGenericTypedArrayViewConstructorInlines.h:
(JSC::constructGenericTypedArrayViewWithArguments):

LayoutTests:

Update tests to allow null buffers.

* fast/canvas/webgl/array-unit-tests-expected.txt:
* fast/canvas/webgl/array-unit-tests.html:
* fast/canvas/webgl/webgl-array-invalid-ranges-expected.txt:
* fast/canvas/webgl/webgl-array-invalid-ranges.html:
* webgl/1.0.2/resources/webgl_test_files/conformance/typedarrays/array-unit-tests.html:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@218082 268f45cc-cd09-0410-ab3c-d52691b4dbfc