Updates location bar & toolbar icons

- Adds new security indicator icons that are more visually balanced with the origin label.
- Adds new share icon that is more consistent in weight to the other toolbar icons, and who’s scale is feels more appropriate inside the Omnibox.
- Adds new toolbar icons that distinguish from Safari and are more GM2 compliant.

Before:
https://drive.google.com/a/google.com/file/d/1eAM4B9XFHt6iZx6c9Swks_7Qj9lL4FIF/view?usp=sharing

After:
https://drive.google.com/a/google.com/file/d/1Zxbv1RYuBuzjDrxSKS_QJ7ZOVQUHarNo/view?usp=sharing

Bug: 1035850

Change-Id: I70cac1b64833fd9921bbc9db868862aedd797391
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1974090Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Ewann Pellé <ewannpv@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726388}

ios/chrome/browser/ui/location_bar/resources/BUILD.gn

@@ -52,7 +52,6 @@ imageset("omnibox_voice") {
 imageset("location_bar_share") {
   sources = [
     "location_bar_share.imageset/Contents.json",
-    "location_bar_share.imageset/location_bar_share.png",
     "location_bar_share.imageset/location_bar_share@2x.png",
     "location_bar_share.imageset/location_bar_share@3x.png",
   ]
@@ -79,7 +78,6 @@ imageset("location_bar_offline") {
 imageset("location_bar_secure") {
   sources = [
     "location_bar_secure.imageset/Contents.json",
-    "location_bar_secure.imageset/location_bar_secure.png",
     "location_bar_secure.imageset/location_bar_secure@2x.png",
     "location_bar_secure.imageset/location_bar_secure@3x.png",
   ]

ios/chrome/browser/ui/location_bar/resources/location_bar_secure.imageset/Contents.json

 {
     "images": [
-        {
-            "idiom": "universal",
-            "scale": "1x",
-            "filename": "location_bar_secure.png"
-        },
         {
             "idiom": "universal",
             "scale": "2x",

ios/chrome/browser/ui/location_bar/resources/location_bar_share.imageset/Contents.json

 {
     "images": [
-        {
-            "idiom": "universal",
-            "scale": "1x",
-            "filename": "location_bar_share.png"
-        },
         {
             "idiom": "universal",
             "scale": "2x",

ios/chrome/browser/ui/toolbar/buttons/resources/BUILD.gn

@@ -90,7 +90,6 @@ imageset("toolbar_share") {
 imageset("toolbar_back") {
   sources = [
     "toolbar_back.imageset/Contents.json",
-    "toolbar_back.imageset/toolbar_back.png",
     "toolbar_back.imageset/toolbar_back@2x.png",
     "toolbar_back.imageset/toolbar_back@3x.png",
   ]
@@ -108,7 +107,6 @@ imageset("toolbar_switcher") {
 imageset("toolbar_forward") {
   sources = [
     "toolbar_forward.imageset/Contents.json",
-    "toolbar_forward.imageset/toolbar_forward.png",
     "toolbar_forward.imageset/toolbar_forward@2x.png",
     "toolbar_forward.imageset/toolbar_forward@3x.png",
   ]

ios/chrome/browser/ui/toolbar/buttons/resources/toolbar_back.imageset/Contents.json

 {
     "images": [
-        {
-            "idiom": "universal",
-            "scale": "1x",
-            "filename": "toolbar_back.png"
-        },
         {
             "idiom": "universal",
             "scale": "2x",

ios/chrome/browser/ui/toolbar/buttons/resources/toolbar_forward.imageset/Contents.json

 {
     "images": [
-        {
-            "idiom": "universal",
-            "scale": "1x",
-            "filename": "toolbar_forward.png"
-        },
         {
             "idiom": "universal",
             "scale": "2x",

ios/chrome/browser/ui/toolbar/public/toolbar_constants.mm

@@ -16,7 +16,7 @@ const CGFloat kNTPBackgroundColorBrightnessIncognito = 34.0 / 255.0;
 
 const CGFloat kTopButtonsBottomMargin = 3.0f;
 const CGFloat kBottomButtonsBottomMargin = 2.0f;
-const CGFloat kAdaptiveToolbarMargin = 4.0f;
+const CGFloat kAdaptiveToolbarMargin = 10.0f;
 const CGFloat kAdaptiveToolbarStackViewSpacing = 11.0f;
 
 const CGFloat kProgressBarHeight = 2.0f;