cc: Trigger GPU rasterization based on a per-layer hint

cc/base/switches.h

Index: cc/base/switches.h
diff --git a/cc/base/switches.h b/cc/base/switches.h
index 689f0e99b6ee286f0bac24ebea9043b724df09a1..f093b9e63405aa4f5697e5b7bccbf1502a52c993 100644
--- a/cc/base/switches.h
+++ b/cc/base/switches.h
@@ -26,6 +26,7 @@ CC_EXPORT extern const char kEnableLCDText[];
 CC_EXPORT extern const char kEnableImplSidePainting[];
 CC_EXPORT extern const char kEnableTopControlsPositionCalculation[];
 CC_EXPORT extern const char kEnableGPURasterization[];
+CC_EXPORT extern const char kEnableUniversalGPURasterization[];

[enne (OOO), 2014/03/06 21:28:46]

Sorry to airdrop in and bikeshed, but kEnableGPURasterization and
kEnableUniversalGPURasterization sound like they're doing different things.

Can this be kEnableGPURasterization and kForceGPURasterization, to make it
clearer that one is a "may" and the other is a "must", but they affect the same
feature?

[ajuma, 2014/03/06 21:44:28]

Please see the latest patch set, where these have both been removed and instead
we have a single kRasterizationSite flag.

 CC_EXPORT extern const char kJankInsteadOfCheckerboard[];
 CC_EXPORT extern const char kTopControlsHeight[];
 CC_EXPORT extern const char kTopControlsHideThreshold[];
@@ -71,7 +72,8 @@ CC_EXPORT extern const char kCCLayerTreeTestNoTimeout[];
 CC_EXPORT extern const char kCCRebaselinePixeltests[];
 
 CC_EXPORT bool IsLCDTextEnabled();
-CC_EXPORT bool IsGpuRasterizationEnabled();
+CC_EXPORT bool IsHybridGpuRasterizationEnabled();
+CC_EXPORT bool IsUniversalGpuRasterizationEnabled();
 CC_EXPORT bool IsImplSidePaintingEnabled();
 CC_EXPORT bool IsMapImageEnabled();