Rename classes related to top controls

cc/base/switches.cc

Index: cc/base/switches.cc
diff --git a/cc/base/switches.cc b/cc/base/switches.cc
index 483c2e392a598a0a3f402dcc1dec86247cea0441..3d2fa44a324be9f96c7910d2ce83025033380eab 100644
--- a/cc/base/switches.cc
+++ b/cc/base/switches.cc
@@ -30,11 +30,13 @@ const char kDisableMainFrameBeforeActivation[] =
 const char kEnableMainFrameBeforeActivation[] =
     "enable-main-frame-before-activation";
 
-// Percentage of the top controls need to be hidden before they will auto hide.
-const char kTopControlsHideThreshold[] = "top-controls-hide-threshold";
+// Percentage of the browser controls need to be hidden before they will auto
+// hide.
+const char kBrowserControlsHideThreshold[] = "top-controls-hide-threshold";
 
-// Percentage of the top controls need to be shown before they will auto show.
-const char kTopControlsShowThreshold[] = "top-controls-show-threshold";
+// Percentage of the browser controls need to be shown before they will auto
+// show.
+const char kBrowserControlsShowThreshold[] = "top-controls-show-threshold";
 
 // Re-rasters everything multiple times to simulate a much slower machine.
 // Give a scale factor to cause raster to take that many times longer to