Move the fake omnibox constraints out of GoogleLandingViewController

ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_utils.mm

Index: ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_utils.mm
diff --git a/ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_utils.mm b/ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_utils.mm
index 3378e95cc1eac0835dac4c40c48a3145ec3a0761..2b213522e3bb10c7af79a90b92834d904342f324 100644
--- a/ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_utils.mm
+++ b/ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_utils.mm
@@ -4,10 +4,17 @@
 
 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_utils.h"
 
+#include "base/i18n/rtl.h"
 #include "base/logging.h"
+#include "components/strings/grit/components_strings.h"
+#include "ios/chrome/browser/ui/commands/ios_command_ids.h"
 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_most_visited_item.h"
 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_most_visited_tile.h"
+#import "ios/chrome/browser/ui/toolbar/web_toolbar_controller.h"
 #include "ios/chrome/browser/ui/ui_util.h"
+#include "ios/chrome/grit/ios_strings.h"
+#import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
+#include "ui/base/l10n/l10n_util.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -19,6 +26,8 @@ const CGFloat kDoodleTopMarginIPadPortrait = 82;
 const CGFloat kDoodleTopMarginIPadLandscape = 82;
 const CGFloat kNTPSearchFieldBottomPadding = 16;
 
+const CGFloat kVoiceSearchButtonWidth = 48;
+
 // Height for the doodle frame when Google is not the default search engine.
 const CGFloat kNonGoogleSearchDoodleHeight = 60;
 // Height for the header view on tablet when Google is not the default search
@@ -112,4 +121,60 @@ CGFloat heightForLogoHeader(CGFloat width,
   return headerHeight;
 }
 
+UILabel* configuredSearchHintLabel(UIButton* searchTapTarget,
+                                   CGFloat searchFieldWidth) {
+  CGRect hintFrame = CGRectInset(searchTapTarget.bounds, 12, 3);
+  const CGFloat kVoiceSearchOffset = 48;
+  hintFrame.size.width = searchFieldWidth - kVoiceSearchOffset;
+  UILabel* searchHintLabel = [[UILabel alloc] initWithFrame:hintFrame];
+  [searchHintLabel setTranslatesAutoresizingMaskIntoConstraints:NO];
+
+  [searchTapTarget addSubview:searchHintLabel];
+
+  [NSLayoutConstraint activateConstraints:@[
+    [searchHintLabel.heightAnchor
+        constraintEqualToConstant:hintFrame.size.height],
+    [searchHintLabel.centerYAnchor
+        constraintEqualToAnchor:searchTapTarget.centerYAnchor]
+  ]];
+
+  [searchHintLabel setText:l10n_util::GetNSString(IDS_OMNIBOX_EMPTY_HINT)];
+  if (base::i18n::IsRTL()) {
+    [searchHintLabel setTextAlignment:NSTextAlignmentRight];
+  }
+  [searchHintLabel
+      setTextColor:[UIColor
+                       colorWithWhite:kiPhoneOmniboxPlaceholderColorBrightness
+                                alpha:1.0]];
+  [searchHintLabel setFont:[MDCTypography subheadFont]];
+
+  return searchHintLabel;
+}
+
+UIButton* configuredVoiceTapTarget(UIButton* searchTapTarget) {
+  UIImage* micImage = [UIImage imageNamed:@"voice_icon"];
+  UIButton* voiceTapTarget = [[UIButton alloc] initWithFrame:CGRectZero];
+
+  [voiceTapTarget setTranslatesAutoresizingMaskIntoConstraints:NO];
+  [searchTapTarget addSubview:voiceTapTarget];
+
+  [NSLayoutConstraint activateConstraints:@[
+    [voiceTapTarget.centerYAnchor
+        constraintEqualToAnchor:searchTapTarget.centerYAnchor],
+    [voiceTapTarget.widthAnchor
+        constraintEqualToConstant:kVoiceSearchButtonWidth],
+    [voiceTapTarget.heightAnchor
+        constraintEqualToAnchor:voiceTapTarget.widthAnchor],
+  ]];
+
+  [voiceTapTarget setAdjustsImageWhenHighlighted:NO];
+  [voiceTapTarget setImage:micImage forState:UIControlStateNormal];
+  [voiceTapTarget setTag:IDC_VOICE_SEARCH];
+  [voiceTapTarget setAccessibilityLabel:l10n_util::GetNSString(
+                                            IDS_IOS_ACCNAME_VOICE_SEARCH)];
+  [voiceTapTarget setAccessibilityIdentifier:@"Voice Search"];
+
+  return voiceTapTarget;
+}
+
 }  // namespace content_suggestions