Merge 114475 - [chromium] Ensure RateLimiter waits for Swapbuffers completion

Merge 114475 - [chromium] Ensure RateLimiter waits for Swapbuffers completion
https://bugs.webkit.org/show_bug.cgi?id=83649

Patch by John Bauman <jbauman@chromium.org>; on 2012-04-17
Reviewed by James Robinson.

We were waiting only on the canvas context, which with the new GPU
scheduling was causing the RateLimiter not to ratelimit enough. We
need to insert no-op commands in the compositor context, so that we'll
wait for the canvas context and SwapBuffers as well.

* platform/graphics/chromium/LayerRendererChromium.cpp:
(WebCore::LayerRendererChromium::doNoOp):
(WebCore):
* platform/graphics/chromium/LayerRendererChromium.h:
(LayerRendererChromium):
* platform/graphics/chromium/RateLimiter.cpp:
(WebCore::RateLimiter::create):
(WebCore::RateLimiter::RateLimiter):
(WebCore::RateLimiter::rateLimitContext):
* platform/graphics/chromium/RateLimiter.h:
(RateLimiterClient):
(WebCore):
(RateLimiter):
* platform/graphics/chromium/cc/CCLayerTreeHost.cpp:
(WebCore::CCLayerTreeHost::startRateLimiter):
(WebCore::CCLayerTreeHost::rateLimit):
(WebCore):
* platform/graphics/chromium/cc/CCLayerTreeHost.h:
(CCLayerTreeHost):
* platform/graphics/chromium/cc/CCProxy.h:
(CCProxy):
* platform/graphics/chromium/cc/CCSingleThreadProxy.cpp:
(WebCore::CCSingleThreadProxy::forceNoOpCommand):
(WebCore):
* platform/graphics/chromium/cc/CCSingleThreadProxy.h:
(CCSingleThreadProxy):
* platform/graphics/chromium/cc/CCThreadProxy.cpp:
(WebCore::CCThreadProxy::forceNoOpCommand):
(WebCore):
(WebCore::CCThreadProxy::forceNoOpCommandOnImplThread):
* platform/graphics/chromium/cc/CCThreadProxy.h:
(CCThreadProxy):

TBR=jbauman@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=114966

[jbauman, 2012-04-24 00:12:36]

lgtm