Merge 67001 - 2010-09-08 Peter Kasting <pkasting@google.com>...

WebKit/chromium/src/win/WebInputEventFactory.cpp

Index: WebKit/chromium/src/win/WebInputEventFactory.cpp
===================================================================
--- WebKit/chromium/src/win/WebInputEventFactory.cpp	(revision 67003)
+++ WebKit/chromium/src/win/WebInputEventFactory.cpp	(working copy)
@@ -403,6 +403,9 @@
     // smooth scrolling while Firefox doesn't, so it can get away with somewhat
     // larger scroll values without feeling as jerky.  Here we use 100 px per
     // three lines (the default scroll amount is three lines per wheel tick).
+    // Even though we have smooth scrolling, we don't make this as large as IE
+    // because subjectively IE feels like it scrolls farther than you want while
+    // reading articles.
     static const float scrollbarPixelsPerLine = 100.0f / 3.0f;
     wheelDelta /= WHEEL_DELTA;
     float scrollDelta = wheelDelta;