Replace enable-compositing-for-fixed-position with prefer-compositing-to-lcd-text.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 43bbe32b1b0ea01925aaf969e2878c7ae444738d..6c129b82ab3d111b777a6159d318eed0ebfa3d69 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -105,9 +105,9 @@ const char kDisableApplicationCache[]       = "disable-application-cache";
 // users with many windows/tabs and lots of memory.
 const char kDisableBackingStoreLimit[]      = "disable-backing-store-limit";
 
-// See comment for kEnableCompositingForFixedPosition.
-const char kDisableCompositingForFixedPosition[] =
-     "disable-fixed-position-compositing";
+// Disable the creation of compositing layers when it would prevent LCD text.
+const char kDisablePreferCompositingToLCDText[] =
+    "disable-prefer-compositing-to-lcd-text";
 
 // See comment for kEnableCompositingForTransition.
 const char kDisableCompositingForTransition[] =
@@ -311,18 +311,9 @@ const char kEnableContainerCulling[]        = "enable-container-culling";
 // Use a BeginFrame signal from browser to renderer to schedule rendering.
 const char kEnableBeginFrameScheduling[]    = "enable-begin-frame-scheduling";
 
-// Enable the creation of compositing layers for fixed position
-// elements. Three options are needed to support four possible scenarios:
-//  1. Default (disabled)
-//  2. Enabled always (to allow dogfooding)
-//  3. Disabled always (to give safety fallback for users)
-//  4. Enabled only if we detect a highDPI display
-//
-// Option #4 may soon be the default, because the feature is needed soon for
-// high DPI, but cannot be used (yet) for low DPI. Options #2 and #3 will
-// override Option #4.
-const char kEnableCompositingForFixedPosition[] =
-     "enable-fixed-position-compositing";
+// Enable the creation of compositing layers when it would prevent LCD text.
+const char kEnablePreferCompositingToLCDText[] =
+    "enable-prefer-compositing-to-lcd-text";
 
 // Enable/Disable the creation of compositing layers for RenderLayers with a
 // transition on a property that supports accelerated animation (that is,
@@ -373,10 +364,6 @@ const char kEnableGpuRasterization[]        = "enable-gpu-rasterization";
 // tiles may be displayed during fast scrolls especially on slower devices.
 const char kEnableLowResTiling[] = "enable-low-res-tiling";
 
-// See comment for kEnableCompositingForFixedPosition.
-const char kEnableHighDpiCompositingForFixedPosition[] =

[danakj, 2014/08/15 21:11:12]

This flag was just sitting around here doing nothing but getting forwarded to
the renderer.

-     "enable-high-dpi-fixed-position-compositing";
-
 // Paint content on the compositor thread instead of the main thread.
 const char kEnableImplSidePainting[]        = "enable-impl-side-painting";