Remove 10.5 support, fix coordinate calls.

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index 9ad92e5906c16688b23395fc6d8982afd3b13dc8..3061613944e4d97f0dfa8ca4934b81cdae27eb80 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -2951,8 +2951,6 @@ extern NSString *NSTextInputReplacementRangeAttributeName;
 }
 
 - (void)insertText:(id)string {
-  // This is a method on NSTextInput, not NSTextInputClient. But on 10.5, this
-  // gets called anyway. Forward to the right method. http://crbug.com/47890
   [self insertText:string replacementRange:NSMakeRange(NSNotFound, 0)];

[Nico, 2012/08/07 16:16:58]

I think we can delete the whole method. I added it because typing would cause
bell sounds on 10.5 with every key press.

[Robert Sesek, 2012/08/07 16:18:08]

He did initially, but it was causing test failures.

 }