Clean visual style, part II: extend bright style, convert icons, more touch-ups.

This commit removes the remaining white icons from the previous style,
which was a mix of 'holo dark' (i.e. light) icons and other un-fitting
icons. It's all replaced with theme-colored icons.

The primary color itself had been altered a bit towards green (#18aba1).
Other than the icon replacements, this commit changes:
 - tab switcher: fix cosmetic bug in the title bar in <= xhdpi devices
 - tab switcher: better incognito presentation
 - settings: enable back (<-) arrow
 - settings: bold color in the activity (on L and up)
 - settings: rationalized launching
 - better spacings on the mobile title bar
 - better padding on history items
 - add proportional padding (1em) to the incognito page
 - the incognito tab bar gets a bit darker
 - ['Ingnito Page', 'New Incognito Tab'] -> 'Private Browsing'
 - 'Page info' -> 'Page information' (no abbrevs when user facing :)

Vast amount of unused resources are removed from the APK.

Change-Id: I4add15fc686495ce27f63e26c2c56c14fa3d6603
diff --git a/src/com/android/browser/NavTabView.java b/src/com/android/browser/NavTabView.java
index 3bcd7a2..49bd080 100644
--- a/src/com/android/browser/NavTabView.java
+++ b/src/com/android/browser/NavTabView.java
@@ -58,7 +58,7 @@
 
     private void init() {
         LayoutInflater.from(getContext()).inflate(R.layout.nav_tab_view, this);
-        mContent = (ViewGroup) findViewById(R.id.main);
+        mContent = (ViewGroup) findViewById(R.id.nav_tab);
         mClose = (ImageView) findViewById(R.id.closetab);
         mTitle = (TextView) findViewById(R.id.title);
         mTitleBar = findViewById(R.id.titlebar);
@@ -89,9 +89,12 @@
             mTitle.setText(txt);
         }
         if (mTab.isSnapshot()) {
-            setTitleIcon(R.drawable.ic_history_holo_dark);
+            setTitleIcon(R.drawable.ic_suggest_history_normal);
         } else if (mTab.isPrivateBrowsingEnabled()) {
-            setTitleIcon(R.drawable.ic_incognito_holo_dark);
+            mContent.setBackgroundResource(R.drawable.nav_tab_title_incognito);
+            mTitle.setTextColor(getResources().getColor(R.color.white));
+            mClose.setImageResource(R.drawable.ic_action_close_inverted);
+            setTitleIcon(R.drawable.ic_deco_incognito_normal);
         } else {
             setTitleIcon(0);
         }