https://bugs.webkit.org/show_bug.cgi?id=77388

Reviewed by Sam Weinig.

* platform/graphics/GraphicsLayer.cpp:
(WebCore::GraphicsLayer::updateDebugIndicators):
Give tile cache tiles a thin dark blue border.

* platform/graphics/ca/mac/TileCache.h:
(WebCore::TileCache::tileDebugBorderWidth):
(WebCore::TileCache::tileDebugBorderColor):
Add getters and member variables for the tile debug border width and color.

* platform/graphics/ca/mac/TileCache.mm:
(WebCore::TileCache::TileCache):
Initialize m_tileDebugBorderWidth.

(WebCore::TileCache::setTileDebugBorderWidth):
Update the border width of each tile layer.

(WebCore::TileCache::setTileDebugBorderColor):
Update the border color of each tile layer.

(WebCore::TileCache::createTileLayer):
Set the border color and border width.

* platform/graphics/ca/mac/WebTileCacheLayer.h:
* platform/graphics/ca/mac/WebTileCacheLayer.mm:
(-[WebTileCacheLayer borderColor]):
(-[WebTileCacheLayer setBorderColor:]):
(-[WebTileCacheLayer borderWidth]):
(-[WebTileCacheLayer setBorderWidth:]):
Call through to the TileCache.

* platform/graphics/mac/WebLayer.mm:
(drawLayerContents):
Don't draw the repaint counter for tile cache layers, each tile will maintain its own repaint counter.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@106304 268f45cc-cd09-0410-ab3c-d52691b4dbfc