Adding experimental maximize mode (behind a flag)

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 1f726db950869721bfeacc309dadf83f108de687..883f2b30750bba6779153f42015defe586f9b362 100644
--- a/chrome/browser/extensions/api/app_window/app_window_api.cc
+++ b/chrome/browser/extensions/api/app_window/app_window_api.cc
@@ -24,6 +24,12 @@
 #include "googleurl/src/gurl.h"
 #include "ui/gfx/rect.h"
 
+#if defined(USE_ASH)
+#include "ash/wm/property_util.h"
+#include "ui/aura/root_window.h"
+#include "ui/aura/window.h"
+#endif
+
 namespace app_window = extensions::api::app_window;
 namespace Create = app_window::Create;
 
@@ -101,6 +107,7 @@ bool AppWindowCreateFunction::RunImpl() {
   // with a hack in AppWindowCustomBindings::GetView().
   ShellWindow::CreateParams create_params;
   app_window::CreateWindowOptions* options = params->options.get();
+  bool force_maximize = true;
   if (options) {
     if (options->id.get()) {
       // TODO(mek): use URL if no id specified?
@@ -227,6 +234,8 @@ bool AppWindowCreateFunction::RunImpl() {
           create_params.state = ShellWindow::CreateParams::STATE_MINIMIZED;
           break;
       }
+    } else {
+      force_maximize = false;
     }
   }
 
@@ -236,6 +245,20 @@ bool AppWindowCreateFunction::RunImpl() {
   ShellWindow* shell_window =
       ShellWindow::Create(profile(), GetExtension(), url, create_params);
 
+#if USE_ASH
+  if (force_maximize && !create_params.maximum_size.IsEmpty()) {
+    // Test if the application can be resized to the full extent of the given
+    // screen.
+    gfx::Size size =
+        shell_window->GetNativeWindow()->GetRootWindow()->bounds().size();
+    if (size.width() > create_params.maximum_size.width() ||
+        size.height() > create_params.maximum_size.height())
+      force_maximize = false;
+  }
+  if (force_maximize)
+    ash::SetCanBeMaximizedByWorkspace(shell_window->GetNativeWindow(), true);
+#endif
+
   if (chrome::ShouldForceFullscreenApp())
     shell_window->Fullscreen();