Add switch to provide app window size on startup

chrome/browser/ui/startup/startup_browser_creator_impl.h

Index: chrome/browser/ui/startup/startup_browser_creator_impl.h
diff --git a/chrome/browser/ui/startup/startup_browser_creator_impl.h b/chrome/browser/ui/startup/startup_browser_creator_impl.h
index 3a89e00e9af61018de2e0b40af8432f98b69a572..286416ca54b10c95b51d04ccef90630ed7b0d9d3 100644
--- a/chrome/browser/ui/startup/startup_browser_creator_impl.h
+++ b/chrome/browser/ui/startup/startup_browser_creator_impl.h
@@ -24,6 +24,10 @@ namespace content {
 class WebContents;
 }
 
+namespace gfx {
+class Rect;
+}
+
 // Assists launching the application and appending the initial tabs for a
 // browser window.
 class StartupBrowserCreatorImpl {
@@ -68,6 +72,9 @@ class StartupBrowserCreatorImpl {
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, RestorePinnedTabs);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, AppIdSwitch);
 
+  // Extracts optional application window size passed in command line.
+  void ExtractOptionalAppWindowSize(gfx::Rect* bounds);
+
   // If the process was launched with the web application command line flags,
   // e.g. --app=http://www.google.com/ or --app_id=... return true.
   // In this case |app_url| or |app_id| are populated if they're non-null.