[rAC, OSX] Force better initial size for sign-in (2nd try)

chrome/browser/ui/cocoa/autofill/autofill_sign_in_container.mm

Index: chrome/browser/ui/cocoa/autofill/autofill_sign_in_container.mm
diff --git a/chrome/browser/ui/cocoa/autofill/autofill_sign_in_container.mm b/chrome/browser/ui/cocoa/autofill/autofill_sign_in_container.mm
index 6ed7e299b23f0c3fd4988ed527e9b65a6673e15d..ea26ca9386451bb3dd2baeb468d4fecd8a953c53 100644
--- a/chrome/browser/ui/cocoa/autofill/autofill_sign_in_container.mm
+++ b/chrome/browser/ui/cocoa/autofill/autofill_sign_in_container.mm
@@ -37,17 +37,18 @@
 - (void)loadSignInPage {
   DCHECK(webContents_.get());
 
-  // Prevent accidentaly empty |maxSize_|.
-  if (NSEqualSizes(NSMakeSize(0, 0), maxSize_)) {
-    maxSize_ = [[[self view] window] frame].size;
-    maxSize_.height -= chrome_style::kClientBottomPadding;
-  }
+  // Ensure initial minimum size doesn't cause resize.
+  NSSize initialMinSize = [[self view] frame].size;
+
+  // Ensure |maxSize_| is bigger than |initialMinSize|.
+  maxSize_.height = std::max(maxSize_.height, initialMinSize.height);
+  maxSize_.width = std::max(maxSize_.width, initialMinSize.width);
 
   signInDelegate_.reset(
       new autofill::AutofillDialogSignInDelegate(
           dialog_, webContents_.get(),
           dialog_->delegate()->GetWebContents()->GetDelegate(),
-          gfx::Size(NSSizeToCGSize(minSize_)),
+          gfx::Size(NSSizeToCGSize(initialMinSize)),
           gfx::Size(NSSizeToCGSize(maxSize_))));
   webContents_->GetController().LoadURL(
       dialog_->delegate()->SignInUrl(),