Cache the GdkSkia object in PlatformContextSkia so that we aren't creating

Cache the GdkSkia object in PlatformContextSkia so that we aren't creating
and deleting them for every widget drawn.

[agl, 2008-11-11 00:00:08]

I ended up keeping it in webkit/port and adding the cache in PlatformContextSkia
instead. This works much better.

[Evan Martin, 2008-11-11 00:04:52]

http://codereview.chromium.org/9757/diff/1/3
File webkit/SConscript.port (right):

http://codereview.chromium.org/9757/diff/1/3#newcode131
Line 131: '$PORT_DIR/platform/graphics/gdk_skia.cc',
alphabetize ?

Should the file have a name like GdkSkia.cpp?  That's what the other files look
like in that dir.  (gtk2drawing has a funny name because it's taken directly
from mozilla.)

http://codereview.chromium.org/9757/diff/1/8
File webkit/port/platform/graphics/PlatformContextSkia.h (right):

http://codereview.chromium.org/9757/diff/1/8#newcode143
Line 143: GdkSkia* gdkskia() const { return m_gdkskia; }
gdk_skia() ?

http://codereview.chromium.org/9757/diff/1/8#newcode169
Line 169: GdkSkia *m_gdkskia;
star on the left D:

[agl, 2008-11-11 00:13:23]

http://codereview.chromium.org/9757/diff/1/3
File webkit/SConscript.port (right):

http://codereview.chromium.org/9757/diff/1/3#newcode131
Line 131: '$PORT_DIR/platform/graphics/gdk_skia.cc',
On 2008/11/11 00:04:52, Evan Martin wrote:
> alphabetize ?
> 
> Should the file have a name like GdkSkia.cpp?  That's what the other files
look
> like in that dir.  (gtk2drawing has a funny name because it's taken directly
> from mozilla.)

Done.

http://codereview.chromium.org/9757/diff/1/8
File webkit/port/platform/graphics/PlatformContextSkia.h (right):

http://codereview.chromium.org/9757/diff/1/8#newcode143
Line 143: GdkSkia* gdkskia() const { return m_gdkskia; }
On 2008/11/11 00:04:52, Evan Martin wrote:
> gdk_skia() ?

Done.

[agl, 2008-11-11 00:14:43]

http://codereview.chromium.org/9757/diff/1/8
File webkit/port/platform/graphics/PlatformContextSkia.h (right):

http://codereview.chromium.org/9757/diff/1/8#newcode169
Line 169: GdkSkia *m_gdkskia;
On 2008/11/11 00:04:52, Evan Martin wrote:
> star on the left D:

Done.

[Evan Martin, 2008-11-11 00:19:58]

LGTM

http://codereview.chromium.org/9757/diff/27/212
File webkit/SConscript.port (right):

http://codereview.chromium.org/9757/diff/27/212#newcode131
Line 131: '$PORT_DIR/platform/graphics/GdkSkia.cc',
alphabetize