[Web Payments] Constrain the dialog inner views to parent's width

chrome/browser/ui/views/payments/payment_request_views_util.h

Index: chrome/browser/ui/views/payments/payment_request_views_util.h
diff --git a/chrome/browser/ui/views/payments/payment_request_views_util.h b/chrome/browser/ui/views/payments/payment_request_views_util.h
index 575a567fe2bc61c356f9e939f9835e251107579b..55363266261f442ef168cb2ed8d2033a41482848 100644
--- a/chrome/browser/ui/views/payments/payment_request_views_util.h
+++ b/chrome/browser/ui/views/payments/payment_request_views_util.h
@@ -33,6 +33,10 @@ constexpr int kPaymentRequestRowVerticalInsets = 8;
 constexpr int kPaymentRequestRowExtraRightInset = 8;
 constexpr int kPaymentRequestButtonSpacing = 10;
 
+// Dimensions of the dialog itself.
+constexpr int kDialogWidth = 450;

[Mathieu, 2017/03/29 22:03:08]

BTW I think harmony dialog widths are being standardized? Something to keep an
eye on:

https://codereview.chromium.org/2785683003/

[anthonyvd, 2017/03/29 22:10:27]

Good to know! I'll land this as-is, monitor the other CL, and see what we need
to change to take this into account.

+constexpr int kDialogHeight = 450;
+
 enum class PaymentRequestCommonTags {
   BACK_BUTTON_TAG = 0,
   CLOSE_BUTTON_TAG,