Add tinted static UI resource cache

chrome/android/java/src/org/chromium/chrome/browser/compositor/LayerTitleCache.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/LayerTitleCache.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/LayerTitleCache.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/LayerTitleCache.java
index 5a7fc237baec1a08bd8f6407f7669a0ef148f8c1..f45f27248e2e608e7c021d5714c0ed73b14017fd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/LayerTitleCache.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/LayerTitleCache.java
@@ -18,6 +18,7 @@ import org.chromium.chrome.browser.favicon.FaviconHelper;
 import org.chromium.chrome.browser.favicon.FaviconHelper.FaviconImageCallback;
 import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.chrome.browser.util.ColorUtils;
 import org.chromium.ui.base.DeviceFormFactor;
 import org.chromium.ui.resources.ResourceManager;
@@ -33,6 +34,8 @@ public class LayerTitleCache implements TitleCache {
     private static int sNextResourceId = 1;
 
     private final Context mContext;
+    private TabModelSelector mTabModelSelector;
+
     private final SparseArray<Title> mTitles = new SparseArray<Title>();
     private final int mFaviconSize;
 
@@ -83,36 +86,53 @@ public class LayerTitleCache implements TitleCache {
         mNativeLayerTitleCache = 0;
     }
 
+    public void setTabModelSelector(TabModelSelector tabModelSelector) {
+        mTabModelSelector = tabModelSelector;
+    }
+
     @CalledByNative
     private long getNativePtr() {
         return mNativeLayerTitleCache;
     }
 
+    @CalledByNative
+    private void buildUpdatedTitle(int tabId, int themeColor) {
+        if (mTabModelSelector == null) return;
+
+        Tab tab = mTabModelSelector.getTabById(tabId);
+        if (tab == null) return;
+        getUpdatedTitleWithThemeColor(tab, "", themeColor);

[aelias_OOO_until_Jul13, 2016/09/03 08:01:46]

It's weird to override the tab's idea of its own themeColor with this one. 
What's preventing you from changing the Tab object's theme color instead?  Would
it be possible to instead reorder the sequence of events so that the tab's
themeColor is in the right state at the right time?

[mdjones, 2016/09/06 16:21:25]

The tab still needs to know its color for the toolbar layer when not in the tab
switcher so I don't think we want to change that value. The problem here is that
the caching logic for the assets is far removed from the rest of the theme color
logic. At the original time of creation the title cache doesn't know if the
asset cache will be full. I believe reordering these events will present the
same problem.

+    }
+
     @Override
     public String getUpdatedTitle(Tab tab, String defaultTitle) {
+        return getUpdatedTitleWithThemeColor(tab, defaultTitle, tab.getThemeColor());
+    }
+
+    private String getUpdatedTitleWithThemeColor(Tab tab, String defaultTitle, int themeColor) {
         // If content view core is null, tab does not have direct access to the favicon, and we
         // will initially show default favicon. But favicons are stored in the history database, so
         // we will fetch favicons asynchronously from database.
         boolean fetchFaviconFromHistory = tab.getContentViewCore() == null;
 
         String titleString = getTitleForTab(tab, defaultTitle);
-        getUpdatedTitleInternal(tab, titleString, fetchFaviconFromHistory);
+        getUpdatedTitleInternal(tab, titleString, fetchFaviconFromHistory, themeColor);
         if (fetchFaviconFromHistory) fetchFaviconForTab(tab);
         return titleString;
     }
 
     private String getUpdatedTitleInternal(Tab tab, String titleString,
-            boolean fetchFaviconFromHistory) {
+            boolean fetchFaviconFromHistory, int themeColor) {
         final int tabId = tab.getId();
         Bitmap originalFavicon = tab.getFavicon();
 
         boolean isDarkTheme = tab.isIncognito();
         // The theme might require lighter text.
         if (!DeviceFormFactor.isTablet(mContext)) {
-            isDarkTheme |= ColorUtils.shouldUseLightForegroundOnBackground(tab.getThemeColor());
+            isDarkTheme |= ColorUtils.shouldUseLightForegroundOnBackground(themeColor);
         }
 
-        ColorUtils.shouldUseLightForegroundOnBackground(tab.getThemeColor());
+        ColorUtils.shouldUseLightForegroundOnBackground(themeColor);
         boolean isRtl = tab.isTitleDirectionRtl();
         TitleBitmapFactory titleBitmapFactory = isDarkTheme
                 ? mDarkTitleBitmapFactory : mStandardTitleBitmapFactory;