Bug 624454 - Increase cache ratio height [r=stechz, a=blocking-fennec]

mobile/app/mobile.js

@@ -50,7 +50,7 @@
 //               => display port height will be 500 * 1.5 = 750
 //
 pref("toolkit.browser.cacheRatioWidth", 2000);
-pref("toolkit.browser.cacheRatioHeight", 2000);
+pref("toolkit.browser.cacheRatioHeight", 3000);
 
 // How long before a content view (a handle to a remote scrollable object)
 // expires.