First part of remembering platform app window geometry.

chrome/browser/extensions/api/app_window/app_window_api.cc

Index: chrome/browser/extensions/api/app_window/app_window_api.cc
diff --git a/chrome/browser/extensions/api/app_window/app_window_api.cc b/chrome/browser/extensions/api/app_window/app_window_api.cc
index 4bebe7e0415ef1db19c2c5d376af015ffb6d230c..e946fbd67ab14c09c51f1d72df42103861ca1871 100644
--- a/chrome/browser/extensions/api/app_window/app_window_api.cc
+++ b/chrome/browser/extensions/api/app_window/app_window_api.cc
@@ -58,14 +58,35 @@ bool AppWindowCreateFunction::RunImpl() {
   ShellWindow::CreateParams create_params;
   app_window::CreateWindowOptions* options = params->options.get();
   if (options) {
-    if (options->width.get())
-      create_params.bounds.set_width(*options->width.get());
-    if (options->height.get())
-      create_params.bounds.set_height(*options->height.get());
-    if (options->left.get())
-      create_params.bounds.set_x(*options->left.get());
-    if (options->top.get())
-      create_params.bounds.set_y(*options->top.get());
+    if (options->id.get())
+      // TODO(mek): use URL if no id specified?
+      create_params.window_key = *options->id;

[asargent_no_longer_on_chrome, 2012/08/28 18:49:41]

nit: can you enforce that the id is some reasonable length here? (maybe 256 or
less?)

BTW, we will eventually have "automagic" support for declaring this in the .idl
file and having it be enforced by the bindings: crbug.com/131617

[Marijn Kruisselbrink, 2012/08/28 22:14:58]

Done.

+
+    if (options->default_width.get())
+      create_params.bounds.set_width(*options->default_width.get());
+    if (options->default_height.get())
+      create_params.bounds.set_height(*options->default_height.get());
+    if (options->default_left.get())
+      create_params.bounds.set_x(*options->default_left.get());
+    if (options->default_top.get())
+      create_params.bounds.set_y(*options->default_top.get());
+
+
+    if (options->width.get() || options->height.get()) {
+      if (options->width.get())
+        create_params.bounds.set_width(*options->width.get());
+      if (options->height.get())
+        create_params.bounds.set_height(*options->height.get());
+      create_params.restoreSize = false;
+    }
+
+    if (options->left.get() || options->top.get()) {
+      if (options->left.get())
+        create_params.bounds.set_x(*options->left.get());
+      if (options->top.get())
+        create_params.bounds.set_y(*options->top.get());
+      create_params.restorePosition = false;
+    }
 
     if (options->frame.get()) {
       create_params.frame = *options->frame == kNoneFrameOption ?