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

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_VIEWS_UTIL_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_VIEWS_UTIL_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 15 matching lines @@
 namespace payments {
 
 constexpr int kPaymentRequestRowHorizontalInsets = 16;
 constexpr int kPaymentRequestRowVerticalInsets = 8;
 
 // Extra inset relative to the header when a right edge should line up with the
 // close button's X rather than its invisible right edge.
 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,
   PAY_BUTTON_TAG,
   // This is the max value of tags for controls common to multiple
   // PaymentRequest contexts. Individual screens that handle both common and
   // specific events with tags can start their specific tags at this value.
   PAYMENT_REQUEST_COMMON_TAG_MAX
 };
 
@@ skipping 50 matching lines @@
 base::string16 GetShippingOptionSectionString(
     payments::mojom::PaymentShippingType shipping_type);
 
 std::unique_ptr<views::View> CreateShippingOptionLabel(
     payments::mojom::PaymentShippingOption* shipping_option,
     const base::string16& formatted_amount);
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_VIEWS_UTIL_H_