[QRCode Generator] Padding adjustment and Icon visibility changes.

Reduces dialog width and space below download button to spec.
Matches eligibility logic to send-tab-to-self (http-or-https)
Matches focus hide/show to STTS.

BUG=1077077,1082829

Change-Id: I0deee3f85d2ccc69190c2723e394584f8ee79588
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2218760Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Gayane Petrosyan <gayane@chromium.org>
Commit-Queue: Travis Skare <skare@chromium.org>
Cr-Commit-Position: refs/heads/master@{#774580}

chrome/browser/renderer_context_menu/render_view_context_menu.cc

@@ -63,7 +63,6 @@
 #include "chrome/browser/sharing/click_to_call/click_to_call_context_menu_observer.h"
 #include "chrome/browser/sharing/click_to_call/click_to_call_metrics.h"
 #include "chrome/browser/sharing/click_to_call/click_to_call_utils.h"
-#include "chrome/browser/sharing/features.h"
 #include "chrome/browser/sharing/shared_clipboard/shared_clipboard_context_menu_observer.h"
 #include "chrome/browser/sharing/shared_clipboard/shared_clipboard_utils.h"
 #include "chrome/browser/spellchecker/spellcheck_service.h"
@@ -2634,18 +2633,14 @@ bool RenderViewContextMenu::IsQRCodeGeneratorEnabled() const {
   if (!GetBrowser())
     return false;
 
-  if (!base::FeatureList::IsEnabled(kSharingQRCodeGenerator))
-    return false;
-
-  if (browser_context_->IsOffTheRecord())
-    return false;
-
   NavigationEntry* entry =
       embedder_web_contents_->GetController().GetLastCommittedEntry();
-  if (!entry || !content::IsSavableURL(entry->GetURL()))
+  if (!entry)
     return false;
 
-  return true;
+  bool incognito = browser_context_->IsOffTheRecord();
+  return qrcode_generator::QRCodeGeneratorBubbleController::
+      IsGeneratorAvailable(entry->GetURL(), incognito);
 }
 
 bool RenderViewContextMenu::IsRouteMediaEnabled() const {

chrome/browser/ui/qrcode_generator/qrcode_generator_bubble_controller.cc

@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ui/qrcode_generator/qrcode_generator_bubble_controller.h"
 
+#include "chrome/browser/sharing/features.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
@@ -18,6 +19,21 @@ QRCodeGeneratorBubbleController::~QRCodeGeneratorBubbleController() {
   HideBubble();
 }
 
+// static
+bool QRCodeGeneratorBubbleController::IsGeneratorAvailable(const GURL& url,
+                                                           bool in_incognito) {
+  if (in_incognito)
+    return false;
+
+  if (!base::FeatureList::IsEnabled(kSharingQRCodeGenerator))
+    return false;
+
+  if (!url.SchemeIsHTTPOrHTTPS())
+    return false;
+
+  return true;
+}
+
 // static
 QRCodeGeneratorBubbleController* QRCodeGeneratorBubbleController::Get(
     content::WebContents* web_contents) {

chrome/browser/ui/qrcode_generator/qrcode_generator_bubble_controller.h

@@ -26,6 +26,10 @@ class QRCodeGeneratorBubbleController
  public:
   ~QRCodeGeneratorBubbleController() override;
 
+  // Returns whether the generator is available for a given page and
+  // state (incognito etc.).
+  static bool IsGeneratorAvailable(const GURL& url, bool in_incognito);
+
   static QRCodeGeneratorBubbleController* Get(
       content::WebContents* web_contents);
 

chrome/browser/ui/views/qrcode_generator/qrcode_generator_bubble.cc

@@ -176,8 +176,11 @@ const char* QRCodeGeneratorBubble::GetClassName() const {
 }
 
 void QRCodeGeneratorBubble::Init() {
-  set_margins(ChromeLayoutProvider::Get()->GetDialogInsetsForContentType(
-      views::CONTROL, views::CONTROL));
+  // Requesting TEXT for trailing prevents extra padding at bottom of dialog.
+  gfx::Insets insets =
+      ChromeLayoutProvider::Get()->GetDialogInsetsForContentType(views::CONTROL,
+                                                                 views::TEXT);
+  set_margins(insets);
 
   // Internal IDs for column layout; no effect on UI.
   constexpr int kQRImageColumnSetId = 0;
@@ -215,12 +218,14 @@ void QRCodeGeneratorBubble::Init() {
   // Text box to edit URL
   views::ColumnSet* column_set_textfield =
       layout->AddColumnSet(kTextFieldColumnSetId);
+  int textfield_min_width = ChromeLayoutProvider::Get()->GetDistanceMetric(
+                                DISTANCE_BUBBLE_PREFERRED_WIDTH) -
+                            insets.left() - insets.right();
   column_set_textfield->AddColumn(
       views::GridLayout::FILL,    // Fill text field horizontally.
       views::GridLayout::CENTER,  // Align center vertically, do not resize.
       1.0, views::GridLayout::ColumnSize::kUsePreferred, 0,
-      ChromeLayoutProvider::Get()->GetDistanceMetric(
-          DISTANCE_BUBBLE_PREFERRED_WIDTH));
+      textfield_min_width);
   auto textfield_url = std::make_unique<views::Textfield>();
   textfield_url->SetAccessibleName(l10n_util::GetStringUTF16(
       IDS_BROWSER_SHARING_QR_CODE_DIALOG_URL_TEXTFIELD_ACCESSIBLE_NAME));

chrome/browser/ui/views/qrcode_generator/qrcode_generator_icon_view.cc

@@ -12,6 +12,7 @@
 #include "chrome/grit/generated_resources.h"
 #include "components/omnibox/browser/omnibox_edit_model.h"
 #include "components/omnibox/browser/omnibox_view.h"
+#include "content/public/browser/browser_context.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace qrcode_generator {
@@ -53,13 +54,22 @@ void QRCodeGeneratorIconView::UpdateImpl() {
   if (!omnibox_view)
     return;
 
-  // TODO(skare): Fix show and re-hide conditions.
-  // Need this queried in more cases.
-  if (omnibox_view->model()->has_focus() &&
-      !omnibox_view->model()->user_input_in_progress()) {
-    if (!GetVisible())
+  if (!QRCodeGeneratorBubbleController::IsGeneratorAvailable(
+          web_contents->GetURL(),
+          web_contents->GetBrowserContext()->IsOffTheRecord())) {
+    return;
+  }
+
+  if (omnibox_view->model()->has_focus()) {
+    if (!omnibox_view->model()->user_input_in_progress() && !GetVisible()) {
       SetVisible(true);
     }
+  } else {
+    // Omnibox not focused.
+    if (GetVisible()) {
+      SetVisible(false);
+    }
+  }
 }
 
 void QRCodeGeneratorIconView::OnExecuting(