Sad tab redesign for Windows, Linux and CrOS.

+ Update chrome://kill and chrome://crash icons. Both now use the same icon.
+ Make layout consistent with the SSL / Malware / net error set of interstitials.
+ Switched colours, margin, padding to use native UI constants.

BUG=457763

Review URL: https://codereview.chromium.org/1129513002

Cr-Commit-Position: refs/heads/master@{#330724}

chrome/app/theme/theme_resources.grd

@@ -433,7 +433,6 @@
       <structure type="chrome_scaled_image" name="IDR_INPUT_ALERT_MENU" file="common/input_alert_menu.png" />
       <structure type="chrome_scaled_image" name="IDR_INPUT_GOOD" file="common/input_good.png" />
       <structure type="chrome_scaled_image" name="IDR_KEYWORD_SEARCH_MAGNIFIER" file="common/keyword_search_magnifier.png" />
-      <structure type="chrome_scaled_image" name="IDR_KILLED_TAB" file="common/killtab.png" />
       <structure type="chrome_scaled_image" name="IDR_LAPTOP_FAVICON" file="common/favicon_laptop.png" />
       <if expr="enable_service_discovery">
         <structure type="chrome_scaled_image" name="IDR_LOCAL_DISCOVERY_CLOUDPRINT_ICON" file="common/cloudprint.png" />

chrome/browser/ui/views/sad_tab_view.h

@@ -10,6 +10,8 @@
 #include "chrome/browser/ui/sad_tab.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/link_listener.h"
+#include "ui/views/controls/styled_label.h"
+#include "ui/views/controls/styled_label_listener.h"
 #include "ui/views/view.h"
 
 namespace content {
@@ -32,7 +34,8 @@ class LabelButton;
 class SadTabView : public chrome::SadTab,
                    public views::View,
                    public views::LinkListener,
-                   public views::ButtonListener {
+                   public views::ButtonListener,
+                   public views::StyledLabelListener {
  public:
   SadTabView(content::WebContents* web_contents, chrome::SadTabKind kind);
   ~SadTabView() override;
@@ -55,8 +58,12 @@ class SadTabView : public chrome::SadTab,
   void Show() override;
   void Close() override;
 
+  // views::StyledLabelListener methods.
+  void StyledLabelLinkClicked(const gfx::Range& range,
+                              int event_flags) override;
+
   views::Label* CreateLabel(const base::string16& text);
-  views::Link* CreateLink(const base::string16& text);
+  views::Link* CreateLink(const base::string16& text, const SkColor& color);
 
   content::WebContents* web_contents_;
   chrome::SadTabKind kind_;
@@ -65,6 +72,8 @@ class SadTabView : public chrome::SadTab,
   views::Link* help_link_;
   views::Link* feedback_link_;
   views::LabelButton* reload_button_;
+  views::Label* title_;
+  views::StyledLabel* help_message_;
 
   DISALLOW_COPY_AND_ASSIGN(SadTabView);
 };