Change the compiler project's save actions settings to organize imports on save.

editor/tools/plugins/com.google.dart.compiler.js/.settings/org.eclipse.jdt.ui.prefs

Index: editor/tools/plugins/com.google.dart.compiler.js/.settings/org.eclipse.jdt.ui.prefs
===================================================================
--- editor/tools/plugins/com.google.dart.compiler.js/.settings/org.eclipse.jdt.ui.prefs	(revision 11361)
+++ editor/tools/plugins/com.google.dart.compiler.js/.settings/org.eclipse.jdt.ui.prefs	(working copy)
@@ -1,6 +1,10 @@
-#Fri Jan 28 10:50:29 PST 2011
+#Sat Aug 25 08:52:38 PDT 2012
 eclipse.preferences.version=1
-editor_save_participant_org.eclipse.jdt.ui.postsavelistener.cleanup=false
+editor_save_participant_org.eclipse.jdt.ui.postsavelistener.cleanup=true
+org.eclipse.jdt.ui.ignorelowercasenames=true
+org.eclipse.jdt.ui.importorder=com.google;\#com.google;com;\#com;junit;\#junit;net;\#net;org;\#org;java;\#java;javax;\#javax;
+org.eclipse.jdt.ui.ondemandthreshold=99
+org.eclipse.jdt.ui.staticondemandthreshold=99
 sp_cleanup.add_default_serial_version_id=true
 sp_cleanup.add_generated_serial_version_id=false
 sp_cleanup.add_missing_annotations=false
@@ -16,7 +20,7 @@
 sp_cleanup.always_use_this_for_non_static_method_access=false
 sp_cleanup.convert_to_enhanced_for_loop=false
 sp_cleanup.correct_indentation=false
-sp_cleanup.format_source_code=true
+sp_cleanup.format_source_code=false
 sp_cleanup.format_source_code_changes_only=false
 sp_cleanup.make_local_variable_final=false
 sp_cleanup.make_parameters_final=false
@@ -25,7 +29,7 @@
 sp_cleanup.make_variable_declarations_final=false
 sp_cleanup.never_use_blocks=false
 sp_cleanup.never_use_parentheses_in_expressions=true
-sp_cleanup.on_save_use_additional_actions=true
+sp_cleanup.on_save_use_additional_actions=false
 sp_cleanup.organize_imports=true
 sp_cleanup.qualify_static_field_accesses_with_declaring_class=false
 sp_cleanup.qualify_static_member_accesses_through_instances_with_declaring_class=true