[chromium] Expose compositor filters to Aura through WebLayer

[chromium] Expose compositor filters to Aura through WebLayer
https://bugs.webkit.org/show_bug.cgi?id=80054

Reviewed by James Robinson.

Source/Platform:

* chromium/public/WebFilterOperation.h: Added.
(WebKit):
(WebFilterOperation):
(WebKit::WebFilterOperation::WebFilterOperation):
(WebBasicColorMatrixFilterOperation):
(WebKit::WebBasicColorMatrixFilterOperation::WebBasicColorMatrixFilterOperation):
(WebBasicComponentTransferFilterOperation):
(WebKit::WebBasicComponentTransferFilterOperation::WebBasicComponentTransferFilterOperation):
(WebBlurFilterOperation):
(WebKit::WebBlurFilterOperation::WebBlurFilterOperation):
(WebDropShadowFilterOperation):
(WebKit::WebDropShadowFilterOperation::WebDropShadowFilterOperation):
* chromium/public/WebFilterOperations.h: Added.
(WebKit):
(WebFilterOperations):
* chromium/public/WebLayer.h:
(WebKit):
(WebLayer):

Source/WebCore:

Adds WebFilterOperation that wraps WebCore::FilterOperation and
WebFilterOperations that wraps WebCore::FilterOperations.

We add support for most of the FilterOperation subclasses, and
allow the user to set the WebFilterOperations for both layer
content filters and background filters.

* WebCore.gypi:
* platform/chromium/support/WebFilterOperation.cpp: Added.
(WebKit):
(WebKit::WebBasicColorMatrixFilterOperation::toFilterOperation):
(WebKit::WebBasicComponentTransferFilterOperation::toFilterOperation):
(WebKit::WebBlurFilterOperation::toFilterOperation):
(WebKit::WebDropShadowFilterOperation::toFilterOperation):
* platform/chromium/support/WebFilterOperations.cpp: Added.
(WebKit):
(WebKit::WebFilterOperations::WebFilterOperations):
(WebKit::WebFilterOperations::append):
(WebKit::WebFilterOperations::clear):
(WebKit::WebFilterOperations::toFilterOperations):

Source/WebKit/chromium:

* WebKit.gyp:
* src/WebLayer.cpp:
(WebKit::WebLayer::setFilters):
(WebKit):
(WebKit::WebLayer::setBackgroundFilters):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114343 268f45cc-cd09-0410-ab3c-d52691b4dbfc