Move CC switches to cc/switches.h.

cc/switches.cc

Index: cc/switches.cc
diff --git a/cc/switches.cc b/cc/switches.cc
index e9e0a778ad51c2ca1a92ddd8e1092f7bbb4ff696..86409fdd331a0537e7c27ab1d84b93594ad95870 100644
--- a/cc/switches.cc
+++ b/cc/switches.cc
@@ -7,14 +7,24 @@
 namespace cc {
 namespace switches {
 
-// When threaded compositing is turned on, wait until the entire frame has
-// content (i.e. jank) instead of showing checkerboards for missing content.
-const char kJankInsteadOfCheckerboard[] = "jank-instead-of-checkerboard";
-
 // On platforms where checkerboards are used, prefer background colors instead
 // of checkerboards.
 const char kBackgroundColorInsteadOfCheckerboard[] =
     "background-color-instead-of-checkerboard";
 
+const char kDisableThreadedAnimation[]      = "disable-threaded-animation";
+
+const char kEnablePartialSwap[]             = "enable-partial-swap";
+
+const char kEnablePerTilePainting[]         = "enable-per-tile-painting";
+
+// Enables an alternative pinch-zoom gesture support, via the threaded
+// compositor.
+const char kEnablePinchInCompositor[]       = "enable-pinch-in-compositor";
+
+// When threaded compositing is turned on, wait until the entire frame has
+// content (i.e. jank) instead of showing checkerboards for missing content.
+const char kJankInsteadOfCheckerboard[] = "jank-instead-of-checkerboard";
+
 }  // namespace switches
 }  // namespace cc