Oilpan: Fix ParamStorageTraits for RawPtr<T>.

Oilpan: Fix ParamStorageTraits for RawPtr<T>.

RawPtr<> can be used for off-heap classes.  e.g. RawPtrWillBeMember<OffHeap>
So, we should check if T is on-heap for ParamStorageTraits<RawPtr<T>>.

This CL also introduces IsGarbageCollectedType<T> struct to simplify on-heap
class check.

BUG=

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=175951

[tkent, 2014-06-11 08:12:17]

Please review this.

https://codereview.chromium.org/322343002/diff/1/Source/platform/heap/HeapTes...
File Source/platform/heap/HeapTest.cpp (right):

https://codereview.chromium.org/322343002/diff/1/Source/platform/heap/HeapTes...
Source/platform/heap/HeapTest.cpp:3994: Closure closure3 =
bind(&OffHeapInt::voidFunction,
RawPtr<OffHeapInt>(OffHeapInt::create(1).get()));
This was not compilable without the Handle.h change.

[Mads Ager (chromium), 2014-06-11 08:36:12]

LGTM

The assumption that RawPtr<T> was only used for garbage collected types was
spectacularly wrong. :-)

https://codereview.chromium.org/322343002/diff/1/Source/platform/heap/HeapTes...
File Source/platform/heap/HeapTest.cpp (right):

https://codereview.chromium.org/322343002/diff/1/Source/platform/heap/HeapTes...
Source/platform/heap/HeapTest.cpp:3993: // RawPtr<OffHeaInt> should not make
Persistent.
OffHeapInt

[tkent, 2014-06-11 08:39:47]

https://codereview.chromium.org/322343002/diff/1/Source/platform/heap/HeapTes...
File Source/platform/heap/HeapTest.cpp (right):

https://codereview.chromium.org/322343002/diff/1/Source/platform/heap/HeapTes...
Source/platform/heap/HeapTest.cpp:3993: // RawPtr<OffHeaInt> should not make
Persistent.
On 2014/06/11 08:36:12, Mads Ager (chromium) wrote:
> OffHeapInt

Done.

[tkent, 2014-06-11 08:39:50]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2014-06-11 08:40:34]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tkent@chromium.org/322343002/20001

[haraken, 2014-06-11 08:58:10]

LGTM

[commit-bot: I haz the power, 2014-06-11 09:47:44]

Change committed as 175951