Add getThemeColor to Tab and add plumbing for ChromeActivites.

chrome/android/java/src/org/chromium/chrome/browser/document/DocumentActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/document/DocumentActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/document/DocumentActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/document/DocumentActivity.java
index 1ede45b25d91c86f03fb4ceb8fdd613deaf53d63..b22e66a8afb42569560719b9fe2332c1f37674e8 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/document/DocumentActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/document/DocumentActivity.java
@@ -58,7 +58,6 @@ import org.chromium.chrome.browser.tabmodel.document.TabDelegate;
 import org.chromium.chrome.browser.toolbar.ToolbarControlContainer;
 import org.chromium.chrome.browser.util.FeatureUtilities;
 import org.chromium.chrome.browser.util.IntentUtils;
-import org.chromium.chrome.browser.widget.ControlContainer;
 import org.chromium.chrome.browser.widget.RoundedIconGenerator;
 import org.chromium.chrome.browser.widget.findinpage.FindToolbarManager;
 import org.chromium.components.service_tab_launcher.ServiceTabLauncher;
@@ -104,7 +103,6 @@ public class DocumentActivity extends ChromeActivity {
     // Indicates whether mIcon was generated by RoundedIconGenerator.
     private boolean mIsUsingGeneratedIcon;
 
-    private Integer mThemeColor;
     private int mDefaultThemeColor;
 
     private DocumentTab mDocumentTab;
@@ -534,9 +532,7 @@ public class DocumentActivity extends ChromeActivity {
             @Override
             public void onWebContentsSwapped(Tab tab, boolean didStartLoad, boolean didFinishLoad) {
                 if (!didStartLoad) return;
-                mThemeColor = tab.getWebContents().getThemeColor(mDefaultThemeColor);
-                mIcon = null;
-                updateTaskDescription();
+                onFaviconReceived(tab.getFavicon());
             }
 
             @Override
@@ -572,7 +568,7 @@ public class DocumentActivity extends ChromeActivity {
 
             @Override
             public void onSSLStateUpdated(Tab tab) {
-                if (hasSecurityWarningOrError(tab)) resetThemeColorAndIcon();
+                if (hasSecurityWarningOrError(tab)) resetIcon();
             }
 
             @Override
@@ -592,30 +588,6 @@ public class DocumentActivity extends ChromeActivity {
             }
 
             @Override
-            public void onDidChangeThemeColor(int color) {
-                if (hasSecurityWarningOrError(mDocumentTab)) return;
-                if (color == Color.TRANSPARENT) color = mDefaultThemeColor;
-
-                // Ignore any transparency value.
-                color |= 0xFF000000;
-
-                mThemeColor = Integer.valueOf(color);
-                updateTaskDescription();
-            }
-
-            @Override
-            public void onDidAttachInterstitialPage(Tab tab) {
-                resetThemeColorAndIcon();
-            }
-
-            @Override
-            public void onDidDetachInterstitialPage(Tab tab) {
-                mThemeColor = tab.getWebContents().getThemeColor(mDefaultThemeColor);
-                mIcon = null;
-                updateTaskDescription();
-            }
-
-            @Override
             public void onCrash(Tab tab, boolean sadTabShown) {
                 int currentState = ApplicationStatus.getStateForActivity(DocumentActivity.this);
                 if (currentState != ActivityState.STOPPED) return;
@@ -655,8 +627,7 @@ public class DocumentActivity extends ChromeActivity {
         }
     }
 
-    private void resetThemeColorAndIcon() {
-        mThemeColor = null;
+    private void resetIcon() {
         mIcon = null;
         updateTaskDescription();
     }
@@ -828,27 +799,19 @@ public class DocumentActivity extends ChromeActivity {
         updateTaskDescription(label, mIcon);
     }
 
-    protected int getThemeColor() {
-        if (isIncognito()) {
-            return mDefaultThemeColor;
-        } else {
-            return mThemeColor != null ? mThemeColor.intValue() : mDefaultThemeColor;
-        }
-    }
-
     private boolean shouldUseDefaultStatusBarColor() {
-        return isIncognito() || mThemeColor == null || mThemeColor == mDefaultThemeColor;
+        return isIncognito() || mThemeColor == mDefaultThemeColor;
     }
 
     protected void updateTaskDescription(String label, Bitmap icon) {
-        int color = getThemeColor();
-        DocumentUtils.updateTaskDescription(this, label, icon, color,
+        DocumentUtils.updateTaskDescription(this, label, icon, mThemeColor,
                 shouldUseDefaultStatusBarColor());
-        getToolbarManager().updatePrimaryColor(color);
+    }
 
-        ControlContainer controlContainer =
-                (ControlContainer) findViewById(R.id.control_container);
-        controlContainer.getToolbarResourceAdapter().invalidate(null);
+    @Override
+    protected void onThemeColorUpdate() {
+        super.onThemeColorUpdate();
+        updateTaskDescription();
     }
 
     /**