trimmed stable release 30.0.1599.101
Merge remote-tracking branch 'origin/feature/removeIMEUnderlineColor/29.0.1547.76' into feature/removeIMEUnderlineColor/30.0.1599.101

Conflicts:
	chromium/src/third_party/WebKit/Source/core/editing/Editor.h
Fix compile errors for v30

* upstream code was depending on transitive includes for PassOwnPtr and String
* remove a reference to (the no longer existing) CompositionUnderline::color