Set the minimum timer interval on a per-page basis, and adjust it when...

webkit/glue/webkit_glue.h

Index: webkit/glue/webkit_glue.h
===================================================================
--- webkit/glue/webkit_glue.h	(revision 75215)
+++ webkit/glue/webkit_glue.h	(working copy)
@@ -46,7 +46,16 @@
 
 namespace webkit_glue {
 
+// Chromium sets the minimum interval timeout to 4ms, overriding the
+// default of 10ms.  We'd like to go lower, however there are poorly
+// coded websites out there which do create CPU-spinning loops.  Using
+// 4ms prevents the CPU from spinning too busily and provides a balance
+// between CPU spinning and the smallest possible interval timer.
+const double kForegroundTabTimerInterval = 0.004;

[darin (slow to review), 2011/02/17 06:42:32]

i'm tempted to pull these constants out of webkit_glue.h as webkit_glue.h is a
messy dumping ground.  adding more stuff to it seems unsavory to me.

how about src/webkit/glue/webkit_constants.h?

[Ken Russell (switch to Gerrit), 2011/02/18 01:05:54]

Sure, good idea. Done.

 
+// Provides control over the minimum timer interval for background tabs.
+const double kBackgroundTabTimerInterval = 0.004;
+
 //---- BEGIN FUNCTIONS IMPLEMENTED BY WEBKIT/GLUE -----------------------------
 
 void SetJavaScriptFlags(const std::string& flags);