Add extension API to change window show state using chrome.windows.update().

chrome/browser/ui/views/frame/browser_view.cc

Index: chrome/browser/ui/views/frame/browser_view.cc
diff --git a/chrome/browser/ui/views/frame/browser_view.cc b/chrome/browser/ui/views/frame/browser_view.cc
index aceab57df981f36e58e3e555335c28d5da6647f7..6de93aa3b8c518dff87e92588f3cb81b937f88e0 100644
--- a/chrome/browser/ui/views/frame/browser_view.cc
+++ b/chrome/browser/ui/views/frame/browser_view.cc
@@ -774,6 +774,18 @@ bool BrowserView::IsMinimized() const {
   return frame_->IsMinimized();
 }
 
+void BrowserView::Maximize() {
+  frame_->Maximize();
+}
+
+void BrowserView::Minimize() {
+  frame_->Minimize();
+}
+
+void BrowserView::Restore() {
+  frame_->Restore();
+}
+
 void BrowserView::EnterFullscreen(
     const GURL& url, FullscreenExitBubbleType bubble_type) {
   if (IsFullscreen())