Add an implementation of std::make_unique for Windows, where we're
currently stuck with C++11, and switch some uses of new over to it.
Test: treehugger
Change-Id: I99b85f07754adda7c525243480c3e0bce9a25ce7
Rearrange some files while we're doing this.
Bug: http://b/71721338
Test: manually ran adb on windows
Change-Id: Ie47bda82279e4b9521505ad0353bf9ef649fc7d7