Consolidate all touch/gesture related constants in content

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 edf16f168df73f4175b61cb581f282cfebb4287a..7bfbf039fc146153e7f3c548740766007fb5ce06 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -161,9 +161,6 @@ const char kDisableFlash3d[]                = "disable-flash-3d";
 // Disable Stage3D inside of flapper.
 const char kDisableFlashStage3d[]           = "disable-flash-stage3d";
 
-// Disable deferral of scroll-ending gesture events when a scroll is active.
-const char kDisableGestureDebounce[]        = "disable-gesture-debounce";
-
 const char kDisableGestureTapHighlight[]    = "disable-gesture-tap-highlight";
 
 // Disable GL multisampling.
@@ -839,10 +836,6 @@ const char kTestSandbox[]                   = "test-sandbox";
 // Type of the current test harness ("browser" or "ui").
 const char kTestType[]                      = "test-type";
 
-// Enable timeout-based touch event cancellation if a touch ack is delayed.
-// If unspecified, touch timeout behavior will be disabled.
-const char kTouchAckTimeoutDelayMs[]        = "touch-ack-timeout-delay-ms";
-
 const char kTouchScrollingMode[]            = "touch-scrolling-mode";
 const char kTouchScrollingModeAsyncTouchmove[] = "async-touchmove";
 const char kTouchScrollingModeSyncTouchmove[] = "sync-touchmove";